HP laptop won’t turn on black screen
Resetting hardware data
The first step is to reset the hardware settings. This is the most common cause of this problem.
We reset the hardware data in the following order:
- Disconnect the power adapter (charging) from the laptop case.
- Removing the battery from the battery compartment.
- Press and hold the power (power on) button of the laptop for at least 20 seconds. You should hold down the power button for so long in order to completely remove the residual charge in the device. Provided the laptop is disconnected from the power supply.
- We put the battery in its place and connect the charger to the laptop.
- Turn on the laptop.
- Using the arrow keys on the keyboard, select the Normal Windows Startup item, then press the Enter key.
And now, finally, our manipulations are over.
Reinstalling the RAM module
Contact problems and a defective memory module are also reasons that prevent the display from being displayed. This method can help even if the laptop was flooded with water the day before. But in any case, before work, you should make sure that it is thoroughly dried.
- Be sure to disconnect the laptop from the electricity supply. Removing the battery.
- We tighten the bolts holding the cover of the RAM compartment. It is better to group the bolts by size, so as not to get confused later. If the laptop does not have a separate compartment, you will have to remove the entire back cover. We do it very carefully.
- Since the RAM is held in place with just a couple of clips, it is not difficult to remove it. We carefully remove the memory from the laptop, blow through all the connectors. You can swap them if possible. We insert the memory bar back, fixing it tightly.
- We assemble the laptop in the same sequence as in the parsing, only the other way around. Do not forget to install the battery and connect the charger to the mains.
But, if this manipulation did not have any positive effect, one should resort to the next, last.
The laptop does not turn on, a black screen appears. What to do!?
This problem is very common and occurs in almost every second seasoned Windows user. This frustration can arise for many reasons. You can deal with the problem on your own and often there is nothing complicated about it. However, if your favorite laptop was flooded with water the day before, such manipulations are unlikely to help.
If your laptop is working, that is, all the sensors are lit, the cooler is working, but nothing is lit on the monitor screen. This will already be a malfunction of a completely different kind. You need to connect an external monitor to the laptop (usually all laptops are equipped with connectors for connecting additional monitors). If a picture appears on an external monitor, but it does not appear on a standard laptop monitor, then we can safely assume that the faulty laptop screen is to blame for everything. In this case, you have a direct path to the service center.
Resetting BIOS settings
The problem with the appearance of a black screen (the screen of death, as users called it a long time ago) may be the reason that you changed the BIOS settings the day before. In this case, you need to reset these settings and return to the original, factory.
This action also has several iterations:
- As soon as we turn on the laptop, we immediately hold down the key called F10 and hold it for 10 seconds. So we get into the BIOS itself.
- Press the key again, this time F9, and then Enter. These manipulations return us to the standard H settings.
- Again press the F10 key and Enter in order to save the new settings.
- Reboot the device.
If these actions did not have any effect on the laptop, we proceed to the next, more complex, step.
We have a direct path to the website of your laptop manufacturer. There you should find the drivers section and indicate the exact model of your device. We find the archive we need in the list of drivers and download it. Following the detailed instructions that should be attached with the archive, we reinstall the BIOS. It is worth knowing: this should be done only as a last resort, because a malfunction can be in the laptop’s video card, and in the south or north bridges. If possible, it is better to take your laptop to the nearest service center.
I hope these recommendations have helped you “revive” your favorite laptop.
Writes that it is impossible to start from the boot device
There may be different messages in English, for example “Error loading operating system” or something similar, and then the laptop will not boot. First, remove all flash drives and disk from the drive and reboot. If it does not help, then the matter is either in the hardware or in the software problem of the hard disk.
The first one is solved by contacting the service center, but first you need to check that the problem is in the disk. The most affordable way is to reinstall Windows yourself. If it helped, then the problem was at the software level.
Constantly reboots or shuts down
The laptop can reboot indefinitely before attempting to boot Windows. This is a serious hardware problem, the south bridge may overheat, usually due to a short circuit in it. Most often this happens due to a breakdown via USB (remember what you inserted into the USB connectors).
Or processor overheating due to a dust-clogged cooler or a loose heatsink. But this is rare and is mainly accompanied by high fan speeds. In this case, the laptop may turn off or reboot at different times.
In the absence or poor power supply, the following picture may be observed: the device turns on, but quickly goes out due to a dead battery.
Turns on, shows a splash screen or writes something and hangs
It may be that the initial splash screen appears or information is displayed, but then the laptop does not start, it also beeps or writes about errors. The probable cause is problems with BIOS settings. You just need to enter BIOS and reset all settings to their defaults. In different versions, this item may be in different places, but the name is approximately the same “Load BIOS Defaults”. the keyword “defaults”. Then exit with saving the settings (“Save Settings and Exit”).
Please note that the system may be reporting some kind of error, but further loading is possible, you just need to press a button. For example, it can write “Press F1 to continue”, which means you need to press F1 to continue loading. This usually happens when the battery on the motherboard runs out (not to be confused with a large battery), the time and BIOS settings get lost. The battery must be replaced at a service center.
This is the simplest thing you can do yourself, because problems can be more serious, for example, a hard disk or RAM failure. With some skill, hard drive problems can be blindly diagnosed by listening to laptop When turned on, the working disk spins the engine and crackles for a couple of seconds, reading information. In case of problems, the engine may unsuccessfully try to start several times, or the heads crackle cyclically, trying to read something from the plates, while everything hangs on the screen.
Some models have open access to RAM sticks. If there is a suspicion of it, then you can try to remove the strips, carefully clean the contacts (see how to do this in the article “Why the computer does not turn on”). If it does not help, then leave one memory module (if there are several) and try to start. If there is only one bar, then move it to another slot.
Fans are making noise, but the laptop screen is not working
Maybe the laptop itself turns on, but the screen does not work. Take a closer look at the monitor, maybe there is something there, but the backlight does not work. Define the hotkeys for turning on the backlight on your laptop and press them. For example, on many Lenovo models, these are the “FnF2” buttons.
The screen may really not work, and there are also various artifacts instead of an image. The surest way to check if a screen or laptop is at fault is with an external monitor by connecting it to the VGA / HDMI output. If there is a picture on it, then the laptop screen will definitely not turn on. Read more about this in the article about stripes on the laptop screen.
A discrete graphics card can often be the cause of a malfunction, especially for those who like to play games on a laptop. Due to a poor cooling system, dustiness / pollution thereof, or improper use of your “friend”, video cards overheat and break down faster. This is especially true for nVidia video cards (GeForce 8400M, 8600M, 9300M and others).
No need to play with the computer on your knees, on your stomach, or in any position that blocks the vents. It is advisable to use laptop cooling pads. And in general, if a laptop is not positioned by the MANUFACTURER as clearly GAMING, then it is not recommended to play heavy toys on it for a long time, even if it pulls them. Monitor the temperature of your graphics card.
So, if the matter is in the video card, then try to pull it out, if the design allows, or turn it off using the switch that is present on some models. The beech can work without a discrete video card, demanding games just won’t run.
There may be more serious reasons: missing / not working processor or memory, broken BIOS firmware, non-working laptop north bridge (problems with the motherboard).
The laptop does not turn on and does not show signs of life
In most cases, we have nutritional problems. The first thing to do is connect the laptop to the power supply and check that there is voltage in the outlet :). Power adapters usually have a light bulb to indicate that they are working. And on the laptop there is an indicator that signals the inclusion in the network and / or battery charge.
Most often, the power supply does not work, or it functions inferiorly (here just try a similar one), bad contacts in the connectors, broken or bent wires. Look at the whole thing and draw a conclusion. at what stage the power is lost.
To avoid problems with the power connector, I advise for the future to insert the power plug into the laptop first, and then only the power cord into the outlet. By doing this, we exclude the possibility of a short-term appearance of a spark when the plug is connected, which spoils the contacts.
If everything “burns”, and the laptop still does not turn on, then the problem may not be in the power supply. Try again to remove the battery and turn on the device again without it, then after 10 minutes put the battery back. Also, disconnect all connected external devices (you can also disable the Wi-Fi adapter if the design allows).
Try to turn on, and if it works, then return the devices one by one, and so you can determine what was the matter.
If your laptop does not turn on and there is still a warranty, then immediately contact the service center!
Perhaps this is all that you can do yourself without disassembling the laptop, if it does not show signs of life at all or shows a black screen. serious reasons may include a non-working motherboard, a broken internal power controller, a south / north bridge, broken contacts inside the device, BIOS firmware failure, and others.
Windows starts to load, but everything is bad
It’s a kind of option that, as usual, Windows starts loading, but then the laptop reboots itself, errors appear on a black or blue screen. Here again, there may be a problem in the hardware, ie. hardware failures, and maybe software.
The surest way to test, again, is to reinstall Windows. “Lite” check option. start from a bootable USB flash drive with Windows. If the laptop with it behaves similarly badly, then the case is probably rubbish, you need to carry it for repair. In general, the problem of loading Windows is a completely different story
Laptop does not turn on. solution to the problem!
Worked your laptop for a year or two and stopped turning on? Or maybe he didn’t work at all Well, such a nuisance happens, and in this article I will tell you what you can do in this situation yourself, and when you need to contact the specialists at the service center.
All problems with a laptop can be divided into two parts: hardware and software. Hardware problems are physical problems with the device, i.e. when repair is needed “by hand”. And the software can be solved on the spot, without getting up from the chair. This includes problems with BIOS setup, operating system and programs.
First, let’s define our problem a little. If the laptop does not turn on at all, i.e. does not show signs of life, then the problem is definitely hardware. If it comes to loading Windows, but then something goes wrong, freezes, reboots, then here is 50/50. Next, I will describe the diagnostic steps, and you can skip those problems that you do not have. Accurate diagnosis of a malfunction is already half of the repair.
Let’s sum up
So what if the laptop won’t turn on? First, think about what happened, what was the last time they did it. If you played for a long time, then the video card or other chipsets of the laptop probably overheated and a qualified repair is needed here.
If you installed any programs, rebooted and that’s it, then there are most likely errors with Windows. The main problems that can be diagnosed and / or solved by myself, I described in the article. Finally, I would advise you not to make rash conclusions and not disassemble the laptop without proper experience.
Laptop Black Screen Won’t Turn On. Top 5 Reasons
Welcome to the blog! Today I will tell you what to do if the laptop does not turn on, you see a black screen, the coolers are working and the indicators are on. It turns out that the laptop itself boots up, but only the screen works. Here is my rating of the Top 5 reasons for a black laptop screen, based on personal experience. This top is suitable for notebooks from Asus, Acer, HP, Lenovo, Toshiba, Dell, MSI, Samsung and others.
Reason 4. black screen and BIOS problems
When the laptop does not turn on and it is clearly visible that the black screen is on, and the video card is working properly, there may be problems with loading BIOS commands. This is often due to a dead battery or BIOS glitches. First, reset the BIOS by shorting the Clear BIOS pins or remove the battery (often CR2032) and close the contacts to which it was connected. Sometimes a rechargeable battery is installed in laptops. but they also lose capacity over time. After clearing the BIOS, you may need to configure it again. Most often, the default settings work.
It so happens that the EEPROM chip. in which the BIOS is flashed fails. Here you need a programmer. to confirm this by reading the byte and new ROM chip for repair. Before repairing, you need to find the firmware file on the official website of the laptop manufacturer. How to unsolder the BIOS chip, see the video.
Reason 1. switching display mode
The first reason for the screen not working when the laptop is turned on and the most annoying one upon detection, I consider switching the display mode. Many laptops have the ability to connect a second screen. be it a TV or monitor. So, by default, when you simultaneously press the Fn button on the keyboard and the button for switching the image receiver from the F1. F12 series, the video signal is sent from the laptop display to the external screen.
Most often, the buttons F4, F5 or F8 are responsible for this. all manufacturers have different ways. Depending on the video driver settings, the image will be stretched over two screens, duplicated or translated only to the second screen. So, if you press these buttons by accident, you can lose your peace of mind. You will have to run headlong into service or start disassembling your laptop. To prevent this from happening, first of all, check this option for the appearance of a black laptop screen.
Reason 2. failure of backlight LEDs or inverter
If your laptop displays a black screen when turned on, then you can often see the desired image on it in bright light. Most likely, the reason is the failure of lamps or LEDs of the backlight or inverter. The backlight inverter is a board for generating the high voltage required to ignite CCFL lamps or power a line of LEDs.
If you have an old laptop, the backlights will fail over time. They need to be replaced with new ones or with modern LED backlighting. Fortunately, now such kits for finalizing the backlight of a laptop or monitor are sold in abundance.
To repair the backlight of the screen, you will have to disassemble the display and change the lamps and inverter. LED backlighting most often fails in pieces or single LEDs. Miniature LEDs for these lines are freely available.
If only the backlight inverter is out of order, then they can be found on ebay and aliexpress. Faults in lamps, LEDs and inverter are usually found by visual inspection and less often by dialing.
Also, don’t forget to check the loop. going to the screen. In older laptops, it was often frayed when opening and closing the lid. In modern electronics, this issue is not so acute, but you should always check.
Reason 3. overheating of the video card
When the laptop boots up, but the black screen does not turn on, we can also sin on overheating and malfunctions of the video card. In laptops, video cards are implemented in two ways. they are built into the processor or into the south bridge, or as a discrete video card that is connected to a separate Mini PCI-e slot. Most often, discrete video cards fail due to a decrease in the efficiency of a cooling system clogged with dust. Also, the reason may be the deterioration of the properties of the thermal interface. a heat-conducting pad or thermal paste.
Diagnostics of such a malfunction in the service is usually carried out using a laptop POST-card or a known-good processor or video card. At home, you can only focus on signals from the BIOS, if they are.
When you have an integrated video card in the south bridge or in the processor, the problem can be determined by excessive heating. Reballing of the south bridge or the chip of the video card built into the motherboard used to be a frequent occurrence and just a disaster for Acer, MSI and even ASUS laptops. Currently, this problem is almost eliminated by manufacturers with the exception of defective batches of electronics.
Reason 5. motherboard malfunctions
The last and rarest reason for a black screen when you turn on your laptop could be a faulty motherboard. Here I include: malfunction of the secondary power supply system, microcracks in the soldering or liquid ingress on the board and connectors, burnout of the tracks and violation of the integrity of the motherboard.
If the circuit for the formation of secondary supply voltages can still be repaired by replacing the transistors and drivers, then burnout of tracks and chips of the board is a direct way to disassembly. But motherboards flooded with liquids are restored depending on the level of damage and the available equipment in the service.
This concludes my Top 5 Reasons for laptop screen not turning on. Hopefully now it is clearer to you what to do if you see a black screen when you turn on your laptop. Unfortunately, I have not found any suitable video instructions for a black screen when turning on the laptop without harmful advice. Someone advises to shake and blow on the battery, someone takes out a hair dryer and begins to fry the motherboard right in the case. This is NOT necessary. So we read the article and ask questions in the comments, on the forum.
Performing a hardware reset step by step
If the black screen persists when starting up your HP laptop, a hard reset is performed. It helps in every second case with a non-working display. 4 steps how to do it:
- Disconnect the charger from the switched off computer.
- Gently remove the battery from the laptop.
- By pressing the power button (on) for half a minute, reset the device’s hardware settings.
- Return the battery to the back of the laptop and reconnect the charger.
Incorrect shutdown of the device will cause a window with the choice of the boot mode to appear. Requires Windows to start.
Connecting an external monitor to check if the display is working properly
If on an HP laptop there is a black screen and the cursor does not move across the display, there is no image, check that the monitor is working properly. Diagnostic steps:
- Connect a TV or external monitor to the laptop, via the VGA or HDMI interface.
- Wait and turn on the laptop. Press the key combination “F8Fn”. This combination will make it possible to start broadcasting a picture through an external media.
If the broadcast does not occur, then the malfunction lies in the operation of the video card. This breakdown is typical for some HP computers. While displaying data, the search continues for a problem with the display. Signs: the indicator may light up or periodically blink, go out, the fan may make noise. If there are no such signals, the computer itself is broken.
Recovering laptop BIOS by pressing a keyboard shortcut
The black screen problem is also caused by a failure of the BIOS parameters. A rollback to the factory version will help eliminate the cause of the dark display. There are hotkeys that are responsible for resetting in Windows. “F9” will help to make a substitution. The difference from a hard reset is the need to reinstall drivers, firmware or to a new version or restore an old one.
The Delete button will help you to enter the system. Use “F10” to save the configuration. But there is a high probability of missing the right moment for a safe update. Programmers recommend resetting the settings by removing the CMOS battery, where the parameters required by the system are stored. The disadvantage of this way of fixing the problem is the need to disassemble the equipment.
Reinstalling the memory module
If a forced reboot does not help, you need to reinstall the RAM. The computer may boot up for a long time and give an error after a long time in a room with high humidity, which causes oxidation of the contacts. The following actions will help to correct the situation:
- After disconnecting the charger, the cover is removed that protects the unit with the RAM bar. In some models without a separate cover, you will have to unscrew the back of the laptop.
- Remove the board by gently bending the latches.
- Blow off dust from connectors, clean contacts from oxidation.
- With the module in place at a 45-degree angle, ensure that the latches are secure. A click will sound. it means that the memory is installed correctly.
- After assembling the laptop, you can restart it in the usual way. When the charging is connected, the indicator light should light up.
Screen won’t turn on on HP laptop
- HP laptop upgrade from 1900 rubles.
- Replacing a video card from 1100 rubles.
- Repair and replacement of motherboards from 450 rubles.
- Soldering and replacement of chips, video cards, processors from 1500 rubles.
- Replacing the screen, matrix from 800 rubles.
Every user may encounter a situation where the HP laptop screen does not turn on. In this case, try performing a hard reset, checking by connecting an external monitor, recovering the BIOS, reinstalling the memory bar.
What to do if your HP Pavilion laptop won’t turn on the screen?
In a situation where the screen on the HP Pavilion laptop does not turn on, you need to try each of the 4 steps in turn. If independent actions did not bring results, you need to seek help. Often, the technician needs to fix many more problems than was originally the case. It will check the operation of all parts of the computer, the driver.
The best solution to the problem that has appeared is to contact an HP service center. The company provides inexpensive and high-quality repair of HP equipment. The official guarantee for services is 12 months. You can call the master at home for free. Self-repair will void the factory warranty.
Causes of malfunction
The reasons why the user cannot turn on the laptop can be divided into several categories. Among them:
the device could overheat, the result of this could be damage to the south or north bridges;
problems with the video card or processor;
the battery could fail, but this happens quite rarely;
the problem is in the hardware settings of the computer;
In the last two cases, you can deal with the disorder yourself at home.
One or another part may fail and stop performing its functions due to:
ingress of moisture and various debris into the system.
Maybe the black screen problem appeared immediately after the user made some changes to the basic BIOS settings. In such a situation, it is necessary to reset these same settings and return to the factory settings, that is, the original.
To complete this task, you must adhere to the following instructions:
as soon as the laptop was turned on, immediately press the F10 button and hold it for at least 10 seconds;
after which, you should press the F9 key;
then click Enter (these actions will help you return to the original settings);
the next step is to press the F10 button again;
to save the new settings, you must click Enter;
then you should reboot the device.
If, after restarting, the computer works as before, then all problems have been fixed. However, if these frauds did not bring a positive result, it is recommended to proceed to the next step.
Screen health check
If the laptop does not turn on the first time, and the screen is black, perhaps the whole problem lies in the screen itself. To find out for sure, you need to check the health of the computer screen.
This recommendation should only be used if the power key was pressed and after that the laptop began to show signs of life. I.e:
However, the image did not appear, then an additional monitor should be connected to the laptop. As a rule, all laptops have a special connector so that you can connect another one. If after rebooting the device, the operating system boots, then the problem lies in the screen.
In this case, you should contact the service center and consult with specialists.
Resetting hardware settings
What if you need to reset all hardware settings? For this:
the user must disconnect the laptop from the power source;
How To Fix HP Black Screen. Computer Starts But No Display. Screen Not Working / Dim
pull out the charger from the socket;
then press and hold the power (power on) key of the device for 20 seconds;
Important! Holding down the button for such a long time is necessary so that the residual charge in the laptop is removed.
then you need to insert the battery in place or connect the power system;
after that, select the item “Normal Windows startup”;
If these actions did not help to solve this problem, it is worth moving on to the next point.
Why is a black screen on a laptop and it won’t turn on
Almost every second Windows user is faced with a problem when the laptop does not turn on and at the same time only have to contemplate a black screen. We can say that this is almost the most common breakdown.
However, everything may not be so serious and perhaps there is no need to run to the service center for help. First of all, you need to figure out the causes of the malfunction yourself. Perhaps you can fix the problem with your own hands, without contacting specialists.
What to do if the laptop turns on for a long time and a black screen appears
Black screen and laptop take a long time to turn on? This may not necessarily be due to part breakage. First, you should remember all the last shenanigans done with the device.
If the device worked intensively for a long time, then it is most likely overheating. In this case, the laptop needs to be repaired by a qualified technician. Perhaps new programs or games were installed before that. After that, a reboot was performed, and the laptop did not turn on, then these may be Windows errors.
However, first you should pay attention to whether the device is connected to power.
If the laptop does not turn on when using only one battery. Perhaps he is simply discharged and there is no point in panic. If the charge is in full order, then it is worth connecting the computer to the network.
After the device was connected to the network, it turned on without any problems, then the problem lies in the battery.
Perhaps it needs to be replaced with a new one. But if the computer still does not work, you need to check whether all the plugs are in place and whether they come off. A wire may have been pinched or broken somewhere.
It is recommended that you check if the outlet is energized. Each laptop has a special light that signals the battery charge and connection to the network. If all the lights are on and the device still won’t turn on, the problem might be something else.
It could also be a problem with the hardware settings of the device. In this case, it is not necessary to contact a specialist. The basic steps to troubleshoot this problem can be done with your own hands without anyone’s help. To do this, you must reset the hardware settings. The following guidelines will help you cope with this task.
The power supply does not work (charging, AC adapter)
Due to this malfunction, there may be a permanent black screen when starting the laptop. If you charge the battery, the computer will function. Correct display of operating system charging. Then it gradually decreases, even when the computer is turned on to the network.
A similar phenomenon occurs for the following reasons:
- Power supply or plug in malfunction, broken.
You can fix the defect by repairing your laptop. If there is poor contact between the board and the connector, replace the connector. It may have broken. In case of broken wires, replace the power supply on the laptop.
- Malfunctions in the power and charging controller.
Fix an HP Laptop with a Black Screen | HP Computers | HP
To fix the problem, you need to completely disassemble the laptop, diagnose the supply voltages, replace the defective parts of the device.
The hard disk (hard drive) does not boot, the HDD is not visible
Some users confuse it with loading the operating system. When this defect appears, in comparison with the previous ones, it is usually easy to enter the BIOS. With such a malfunction, the laptop may behave differently. It may freeze during the BIOS splash screen, constant spinning of the cursor showing that the laptop is trying to boot. A cursor may appear on a dark screen and a message about the use of a non-system disk may appear.
The possible cause of this problem lies in the following points:
- Hard disk malfunction (use of a non-working uninitialized controller, mechanical damage to media, bad).
To eliminate this defect, you just need to remove the old hard drive to use the new one.
- Problems with a South Bridge that has a hard disk controller.
You can fix the problem by completely disassembling the computer and then replacing the south bridge.
The battery on the laptop does not charge (the charge does not increase in percentage, there is no charge indication)
From these parameters, you can determine that the network is supplying energy to the computer. The device can turn on if the unit is supplied with power. The operating system displays an icon that the computer is using the electrical network for power. The battery charging icon is not displayed. It’s not just a dead battery that causes problems like this.
This can happen due to the following reasons:
You can fix the problem by replacing it. Better to do so so as not to overpay a huge amount for repairs. This is a more reliable solution. The cost of batteries is not that high.
- Malfunctions in the power and charge controller.
It can be solved by completely disassembling the laptop, diagnosing the supply voltages, replacing faulty parts.
- External power supply requires additional power.
To fix this problem, you need to replace the supply unit with a more suitable power. To determine it, just look at the case on the entry on the laptop under the inscription Input.
Battery problems, laptop does not turn on when power supply is disconnected
In this case, it should be clear to the user that the device cannot operate on battery power. External power must be present because the laptop will not start without it. It can work for a moment and then go out again.
The laptop may not turn on for the following reasons:
- Mainly due to an inoperative battery (usually there is no battery charge, the Everest program displays indications of high wear of this element).
To fix this problem, you need to change the battery. Do not repair it. There will be no sense from this, but only waste. You need to choose the right battery option for your laptop brand ASUS, Lenovo, Samsung or other.
- Malfunctions in the controller that controls power supply, battery charge.
To eliminate the defect, you need to completely disassemble the laptop, diagnose the battery charging circuits, check the keys and controller, change broken parts.
No initialization (black screen when the laptop is turned on)
When you turn on the laptop, a black screen, when you press the main power button, you can hear the operation of the cooler spinning without stopping. He carries out high revs. Together with it, the light of the indicators of different buttons will turn on. They are on, but the computer does not boot and there is no light on the screen. There may be different options with the operation of indicators, only the cooler still works. The image does not appear on the display, the HDD indicator does not flash. Often users confuse this problem with the problem of the absence of a picture on the display and the presence of an image at the borders of an external monitor.
If a black screen and the laptop does not turn on, you need to look carefully, if there is no download at all, this does not mean that the matrix is in a faulty condition and does not have images at all.
- A problem arises due to a malfunction of the processor, memory (with poor contact in the processor, memory module, connectors, lack of supply voltages).
To solve this problem, you need to completely or partially disassemble the laptop and make its subsequent diagnostics. Check supply voltages, distort or replace these elements. If they are missing, then install.
To solve this problem, you need to flash the BIOS with a special disk. If it is not there, then you will have to completely disassemble the laptop, solder it, replace the necessary elements, BIOS chips, reflash using the programmer.
- Problems with the Northbridge or GPU.
To solve the problem of a non-working video chip or north bridge, you need to completely disassemble the laptop and then diagnose the supply voltages, generate clock frequencies, replace faulty microcircuits.
Shutdown, reboot when BIOS initialization and BIOS splash occurs
Some users confuse it with a reboot, which is started during the startup of the RAM. These reboots differ in the frequency of actions. In this case, the operation takes three seconds.
It is impossible to say how the laptop behaves in this case. You can talk about possible behavior in several cases:
- The south bridge is out of pace. Usually, this is caused by a short circuit, breakdowns arising from the USB connector and breakdowns occurring in it.
To solve this problem, you need to completely disassemble the laptop, then completely replace the south bridge.
- The processor, the north bridge is overheated, the cooler is clogged with dust, the radiator is loose. Because of all this, the fan rotates quickly and turns off in different ways.
You can solve the problem by completely or partially disassembling the laptop and then inspect the cooling system, clean the laptop from dust particles, check the correct heat sink.
- The power supply does not supply power. The laptop is attempting to use the battery for starting. Since the battery is already low, the computer immediately turns off and the screen goes dark.
To eliminate this defect, replace the power supply. Better to use new parts. Information on can be found on the company’s website.
- BIOS chip or firmware has gone bad.
You can fix this problem by flashing the BIOS. To do this, use the crisis floppy disk. If there is no sense in using it or it is not possible to use a floppy disk, you need to completely disassemble the computer in order to replace the damaged elements if necessary and then reflash everything again.
What to do if your laptop won’t turn on?
Any master engaged in the repair of computer equipment, especially laptops, it is clear that in order to speed up the repair process, the user must be able to understand the minimum malfunctions of a laptop.
It is enough to go to a search engine to prove this belief. All masters say the same thing. It doesn’t even make sense to repeat the same phrases after them. The same algorithm of actions is used everywhere. A user who has spent a lot of time at a computer must know all this. After all, it is stupid to contact a professional every time because of the slightest malfunctions when starting Windows. But sometimes there are more complex malfunctions when the laptop does not turn on or when the laptop is turned on a black screen.
You need to at least understand why the laptop does not turn on and where the problem came from. Perhaps there is nothing serious and there is no point in calling the master on every occasion. Unless the motherboard is damaged. Then our advice from this publication will not be enough.
To repair this basic element in a computer, you need to have the necessary tools as well as skills. The fact that users cannot do without tools only in the process of disassembling the laptop. Due to the lack of necessary elements, the laptop has to be reassembled, but with difficulty. It will seem that somewhere a part has broken off or a circuit has closed.
The operating system does not load. The laptop restarts while it boots.
It can happen at any time. Only the operating system is loaded first. At least 3 seconds should pass. It occurs for the following reasons:
- The system is infected with viruses. This causes the computer to restart.
You can fix this problem by using an external bootable media and by checking the disk using the popular antivirus.
To fix this problem, you need to reinstall your operating system. This method helps in many cases. It is difficult to eliminate the defect in another way. The actions are not so complicated, an ordinary user can handle them. Routine reinstallation or search for causes of reboots.
- I am having memory or processor problems.
This problem can be solved by replacing the faulty component. To do this, you can contact FixCentr.
- In rare cases, the appearance of microcracks in the motherboard. This happens if the computer is under non-linear loads. It is pulled in opposite corners, bent.
The problem can be eliminated by diagnosing the board with coils, connectors and bridges. Then they are soldered, replace the faulty elements with new ones.
Laptop users experiencing black screen issue have been helped by a way to reset BIOS to default. If the computer shows signs of life (coolers are working), connect it to a monitor or do the blind procedure:
- Turn on the device.
- After turning on, press the F10 key for 10 seconds (enter BIOS).
- A menu will open, wait and press F9.
- Press Enter (rollback to original settings).
- Press F10 (exit BIOS) /
- Press Enter to save changes, exit and restart your computer.
If the laptop shows signs of life when turned on:
- Connect it to a 220V network, check if there is voltage (look at the laptop charge indication).
- There is an indication, but the laptop does not turn on. disconnect the charger from the laptop.
- Pull out the battery as shown in the figure.
- Clean clogged contacts.
- Press and hold the power button for 20 seconds to remove the residual charge from the motherboard and laptop components.
- Connect the charger and turn on the device, check the screen operation. If it works, put in the battery and check it again. Laptop won’t turn on? We recommend replacing the battery.
- Connect monitor via VGA or HDMI outputs.
- Start your laptop and follow the process.
- If the BIOS and Windows boot was successful, there is a problem with the screen or its connection (the loop may have come off).
Causes of malfunction
The reasons why the laptop screen does not work can be divided into several groups:
- Damage to the south or north bridge of the motherboard due to mechanical interference or overheating of the device.
- Malfunctions with the central processor or video card.
- Broken loop, laptop matrix or backlight.
- The RAM crashed or fell out of the socket.
- Malfunctions in the hardware settings of the computer.
- The battery has stopped working.
In the first three cases, repair or replacement of parts is required. You can try to fix the malfunctions described in the remaining paragraphs yourself.
What to do if laptop won’t turn on. black screen?
Every third laptop owner is faced with a black screen at startup. There can be a lot of reasons that cause the problem, but before contacting a computer repair service, we recommend that you perform diagnostics yourself. We will talk about this below.
Checking RAM sticks
There is a possibility that the motherboard has stopped recognizing random access memory (RAM):
- Unplug the laptop and take out the charger, turn it over, remove the screws.
- Open the back cover.
- Gently push the latches apart to remove the RAM.
- Take out the strips of the OP and clean the contacts with an eraser.
- Change the connector (if several) or places of the OP.
- Insert the OP backwards at a 45% angle and press lightly from above. The clamps will do all the work themselves.
- Check the connection of other devices (hard disk or SSD bracket).
- Close the cover, plug in the device and check its operation.
If the advice of the article did not help you, we recommend that you contact the service center. Most likely the malfunction is in the hardware. Also write to us, maybe together we can find the problem.
The laptop does not turn on and shows no signs of life
The worst thing that an ordinary user of this device can imagine. What to do in this case?
- Often, if the laptop does not start, then the problem lies in its power supply. Therefore, first of all, check if there is a light in the house and voltage in the outlet.
- If there were no problems with electricity, you should proceed to inspect the power supply. Perhaps it began to work intermittently, or it broke completely. The surest way to be sure of this is to get the exact same power supply, only in working order. Connect it to your laptop and see if your device turns on.
- Often the breakdown of the power supply is very trivial. broken wires or broken contacts in the connectors. By the way, in the future, one simple rule will help to avoid problems with the charger. When charging the laptop, first plug the plug into the device, and then plug the adapter into an electrical outlet. The fact is that with a different connection order, a spark appears, which spoils the contacts.
- If a similar power unit does not save the situation, then it is time to move on to more decisive actions. Remove the battery from your device, wait 10-15 minutes, and then turn on the device. If it turned on without problems, then secure it and put the battery in its original place.
- Another reason why the laptop does not turn on, sometimes lies in the devices connected to it. Disable them all, including even the Wi-Fi adapter. Try to start the device again. If the laptop turns on, then return the external devices one by one to understand which one triggered the problem.
These are the steps you can take yourself when your laptop won’t boot. If none of them led to the desired results, then the problem should be looked for in a non-working motherboard, broken internal contacts and more. And only an experienced master will help with this.
Turns on and freezes after the splash screen
Sometimes, for some reason, the laptop does not start in any way. And sometimes it still starts, you can see the initial splash screen and basic information about the device on the screen, and then the device freezes. Either nothing happens at all, or information appears about errors that interfere with the full operation of the machine.
- Don’t be intimidated. The most common reason for this is the BIOS settings. You just need to enter the BIOS and reset all parameters. “Load BIOS Defaults”. After that save and exit.
- Sometimes it happens that the laptop freezes, reports the detected error and asks to press a certain button. For example, “Press F1 to continue”. As a rule, after pressing it, it continues to turn on and then works as usual. And although such a solution to the problem is the simplest, you should not ignore the very fact of informing about the error. Most often this happens if the battery in the motherboard of the laptop starts to run out or the BIOS settings get lost. Please note that you need to contact the service center to replace the battery.
- Of course, problems with a laptop can be more serious. For example, malfunctions associated with the operation of the hard disk manifest themselves in a similar way. In this case, there is a chance to determine the presence of problems by ear. If the hard drive is faulty, then you will hear the engine trying to start unsuccessfully under a slight crackling of the heads.
- Another reason why the laptop won’t turn on is RAM. Some device models provide access to its brackets. You can try removing them and gently cleaning the contacts. If this does not help, then start the machine, leaving only one memory module at a time. In the event that your device has only one bar, then put it in another slot and start the device again. There is a great chance that these actions of yours will help solve the problem.
A message is displayed about the inability to start from the boot device
As a rule, we are talking about a variety of messages in English. If you encounter something like this, remove all flash drives from the device, and remove the disk from the drive. Restart your laptop. If your actions have not brought any positive result, then the problem most likely lies in the work of the hard disk. Such a malfunction can be of both software and hardware nature.
In the first case, reinstall Windows. If after that your laptop began to work as before, then this means that the problem was software and now it has already been resolved. If reinstalling the operating system did not save the situation, then it’s time to contact the service department, whose employees will solve this malfunction at the hardware level.
What to do if the laptop does not turn on: 6 main situations and ways out of them
No one is safe from laptop breakage. But the good news is that most of the problems that arise in the operation of this device can be solved. It is only necessary to determine the cause of the breakdown and its nature, and then act according to the situation. All laptop problems are either software or hardware. It is necessary to accurately diagnose the malfunction, and then you will already know exactly what steps to take to eliminate it.
So, why the laptop does not turn on and what to do?
The laptop is constantly rebooting or shutting down
If your device is constantly shutting down and rebooting, then it is most likely a serious hardware problem. Perhaps the fault is in the short circuit in the south bridge, which caused it to overheat. Or, dust has gotten into the cooler, which has caused excessive heating inside the processor. If so, the fan will run at high speeds, but it will still not cope with the problem. As a result, your laptop will periodically shut down and reboot. This will happen at a variety of times, regardless of external reasons. You are unlikely to be able to solve the problem yourself this time, so immediately contact the service center.
But before that, make sure it’s not a bad diet. If the laptop battery runs out, the device can turn on and then immediately shut down.
Coolers can be heard, but the laptop screen is not working
So, you know what to do if your laptop won’t turn on. But there are also cases when it starts, but its screen remains dark. What to do in this case?
Take a close look at the monitor. Perhaps you still manage to consider something? If so, then the screen, most likely, is in order, but the backlight does not work. You can enable it using the hotkeys on the keyboard. Each model has its own and most users are well known.
2. Another way to check if the screen is working is to connect an external monitor to the laptop. If a picture appears on it, then there is no doubt and the cause of the malfunction is determined.
3. Often the problem is hidden in a discrete video card. This element sometimes overheats and breaks down. By the way, some video cards are prone to breakdowns more often than others. For example, nVidia graphics cards have a short lifespan.
To prevent such damage, do not hold the laptop on your lap or in any other position with the ventilation holes covered. It is advisable in such cases to use special stands that do not impede air circulation.
If your laptop is not a gaming laptop, then do not devote too much time to games on it. And one more thing. do not forget to monitor the temperature of the video card. If the reason is in it, then remove or simply turn it off. on some laptop models, switches are specially provided for this. With the missing discrete video card, your device will continue to work, you just have to temporarily say goodbye to some games.
Of course, the reason why the laptop boots up and won’t turn on can be more serious. For example, in some cases, the problem is with the processor or firmware, motherboard or memory. But you are unlikely to cope with such difficulties on your own.
After loading Windows shows the screen of death, errors on the black screen and reboots
Another fairly common problem is when, when you turn on the laptop, Windows starts to load, but then the boot is interrupted and the device restarts. The screen turns blue or black and displays numerous error messages.
As in the previous case, the problem can be of both software and hardware nature. And again, restarting Windows will help to understand what exactly happened to your device. Reinstallation of the operating system can be started from a bootable USB flash drive. If you succeed in doing this, then the problem can be considered solved. If not, then you can’t figure it out without the help of specialists from the service center.
Thus, if the laptop does not turn on, then this is not a reason to panic. In many situations, you can diagnose and fix the problem yourself. You just need to analyze your recent actions with this device. For example, if you spent many hours playing a game shortly before the breakdown, then your video card is most likely overheated. Try a little and you will be able to bring your device back to life again.