The monitor does not light up when the computer is turned on

Checking the monitor power supply

If everything is normal with the cable, and the indicator on the monitor does not light up, then this indicates a malfunction of the power supply.

The power supply on the monitor can be external or internal. The external power supply can be checked with a multimeter, with which we previously checked the power cable.

The power supply has a voltage of 14 V, so we turn on the constant voltage mode on the multimeter within 20 V. We connect the central and side contacts on the power supply plug with the probes, as shown in the photo below.

monitor, does, light, computer, turned

Checking the external power supply of the monitor with a multimeter

The readings should be within the limits stated on the PSU sticker, as in my case, 14.12V, which indicates a working power supply.

If the voltage is much less than or near zero, then this indicates its malfunction. Carry the power supply unit for repair.

The internal power supply cannot be checked without disassembling the monitor. Better leave this occupation to a specialist.

How to check the backlight of the monitor screen

Take a flashlight or turn it on on your smartphone and shine it on the screen. Shine at an angle on different parts of the screen, trying to see the same picture with the text. the cable is not connected.

We backlight on the monitor screen to check the LED backlight of the matrix

If you see this sign on the highlighted area of ​​the screen, it confirms that the backlight has burned out. Take the monitor to a service center to replace the LED backlight.

Checking the video adapter HDMI to VGA

Not so often, but there is still a problem in the video adapter that is connected to the video card on the computer.

On one request, a client had a problem with this type of HDMI to VGA adapter. The monitor did not show precisely because of him.

Defective HDMI to VGA adapter

Since the client’s computer was new, I decided to replace it with my HDMI-VGA adapter and check.

Replaced with a working HDMI. VGA adapter

An image appears on the monitor

Checking the video card on the computer

So, we checked the monitor and made sure that the monitor and all connections are working properly. Checking the computer now.

We take out the video card and if the motherboard has a video output, then try connecting the cable from the monitor directly to the motherboard.

We connect the VGA cable to the video output on the motherboard

Do you get an image? If so, then the matter is in the video card. We take an eraser and clean the contacts on the video card and put them in their place.

We clean the contacts of the video card with an eraser

We connect the cable and start the computer. An image should appear. If not, then the video card is out of order. There are three options here:

  • We leave the monitor connected to the motherboard and use it like this.
  • We buy a new video card and replace the burnt one.
  • We hand over the video card for repair.

Important! If you have a video card, connect the cable to connector 2, and not to the motherboard 1. Shown in the photo below.

With a video card connected, you need to connect the cable to video card 2, and not to motherboard 1

Often, after moving the computer to a new location and connecting the cables, the monitor does not show precisely because of the wrong cable connection.

If there is no video output on the motherboard and after cleaning the video card the image does not appear, then we clean the contacts on the RAM.

Cleaning contacts of RAM

We take out the strips of RAM, clean the contacts with an eraser and put them back.

To do this, turn off the computer from the network and take out the RAM bar. If there are two or more slats, take out everything.

Snap off the sides of the mount and detach the RAM bar

We clean the contacts on both sides with an eraser.

We clean the contacts of the RAM strip with an eraser on this and the back side

We insert the RAM bar back into the motherboard.

We turn on the computer and see if the image appears? If yes, congratulations, then the problem was in the contacts of the RAM.

If the image does not appear, then we try the last option.

Checking the power cable connection

First of all, you need to make sure that the monitor is connected to the mains. To do this, check the connection of the power cable on the monitor. The cable should fit snugly in the socket on the back of the monitor and in the outlet itself. If the indicator on the monitor is on, this indicates that there is power. everything is fine with the cable.

If there is no power, the cable may have burned out. This is not common, but it is possible. Check the cable visually, if you notice suspicious places of insulation melting, then replace the cable with a new one.

If everything is fine with the cable outside, then we will check the cable for a break with a multimeter. this is such a tester, an electrical measuring device.

To do this, set the dialing mode on the multimeter. We insert one probe into the contact of the plug, and connect the other with the cable plug, as shown in the photo below.

Checking the monitor cable with a multimeter. no break

You need to check the two outermost wires in the cable. The central one, as a rule, is grounding and it does not affect the work. If the multimeter beeps and shows constantly changing numbers, then this indicates a working wire. We also check the second wire in the cable.

This is how the multimeter will show when there is a break in the cable. I deliberately did not connect one contact, this simulated a break inside the cable.

Open circuit simulation. the multimeter shows an open circuit in the monitor cable

If the tester does not give a sound signal, and the numbers on the display do not change, then there is a break in the cable. replace it with a new one.

Checking the cable connection from the monitor to the computer

Let’s say that your monitor turns on, but does not show a picture from the computer. The next step is to check the video cable connecting the monitor to the system unit.

Computers use 4 types of video connectors:

  • VGA. analog
  • DVI. digital
  • HDMI
  • Display port

Connectors on the video card

With the computer turned on, unplug the cable and plug it back in. If the image appears well, if not, we look for the malfunction further.

faulty power supply

The power supply is one of the key computer tools that ensure the correct operation of the entire system. In this case, if there are any problems with the monitor, you should also check the power supply, namely, try to connect another power supply to the problem computer and look at the final state of the monitor.

If it has improved, the power supply will need to be opened, cleaned of dust, and also pay attention to capacitors that could swell. details about the diagnostics of the power supply were previously described on our website.

The problem is on the computer side

First of all, let’s consider the types of computer malfunctions leading to the “blinking” of the monitor.

video card problems

Try disconnecting the video card from your computer and connecting it to another. this way you can check if it is out of order. If the matter is in the video card, look at the contacts and, if necessary, clean (and also remove all visible dirt). If this does not help, the video card must be taken for repair.

swollen capacitors

One of the most likely causes is if the cause of the flickering lies in the monitor. In this case, you will need to look under the monitor case and check the condition of the capacitors. these are small barrels that tend to swell. If you see that the capacitor is even slightly deformed, not to mention the example in the screenshot below, then you need to start soldering all problem capacitors.

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malfunction of the video card drivers

Any problems with the display should make you think there is a problem with the graphics card drivers. Therefore, the first thing you need to do is reinstall them.

    First of all, you need to download a fresh distribution of drivers for the video card from the developer’s official website in accordance with the video adapter model and the installed version of the operating system (you must also observe the bit depth).

Next, you need to remove the already installed video card drivers in order to install the fresh distribution kit without any conflicts. This can be done by opening the menu “Control Panel”, and then going to section “System”.

In the left pane of the window, go to the section “Device Manager”.

A window will appear on the screen displaying all the devices installed for your computer. You need to open the “Video adapters” branch, right-click on the name of your video card and select the item “Delete”.

A confirmation window will appear on the screen in which you need to check the box next to “Remove driver programs for this device”, and then click on the button “OK”.

As soon as the removal of the drivers is completed, be sure to restart the computer so that the changes made are finally accepted by the system. The only thing left is to run the pre-downloaded distribution kit with the drivers and install them on the computer.

  • After finishing the installation, restart your computer again.
  • wrong video card selected

    Many computers and laptops include two video cards. an integrated one and an external one. The first will not allow you to work with heavy graphics programs and computer games, but at the same time it is the best choice if you need to save energy.

    Some laptops have a button on their case that allows you to switch from the mode “Stamina” on “Speed”. If you have a similar button, make sure the switch is set to “Speed”. Make changes if necessary.

    In addition, the integrated video card can also be activated through the BIOS. In this case, you should check if this is so.

    First you need to enter BIOS. As a rule, this can be done if you send the computer to reboot or just turn it on, and at the very early stage of the system boot, start pressing the key responsible for entering the BIOS settings. As a rule, in most cases it is either F1 or F2 or Del.

    Once in the BIOS, you need to find the item responsible for the graphics. It is impossible to say exactly how it can be called in your case. it all depends on your computer and the installed BIOS. If you are a user of a stationary computer, then the item we need may be located in the section Integrated Peripherals. In the case of laptops, it is even more difficult to tell the location of the partition. it can be located anywhere.

    The search target is an item containing either the word Graphics or GPU. For example, in your case, the item may be called “Graphic Device”, “Onboard GPU”, “Primary Graphics Adapter” etc. In some cases, the item may have a video “Enable-Disable”, that is, enabling and disabling the built-in video card, and in some cases it is required to specify which graphics adapter will be used by the computer.

    If you have made changes to the BIOS settings, then before exiting you will need to save them and then exit the BIOS.

    Checking the video cable connection

    First, we check the tightness of the cable connection in the connectors of the monitor and the system unit. Be sure to check the pins in the cable connectors for bending. Sometimes, with a sharp lateral pulling of the cable, these contacts bend. When reconnecting again, the user may apply excessive force and bend the pins. Therefore, be sure to check them when connecting.

    Next, let’s check the cable for kinks. To exclude this possibility, connect another similar cable, thereby finding out whether it is to blame for the monitor not working. Problems with a wire break or short circuit in the cable manifest themselves long before it fails. the monitor starts to glow with one color (green, blue or red) when turned on, and the background changes when you bend the cable in one found place. In this case, the cable must be urgently replaced, otherwise it can lead to damage to such an expensive component as a video card.

    If you have two video cards installed in your system unit (integrated and discrete), check if you connected the cable to the right connector. When you buy a ready-made computer with a discrete video card installed on it, then the integrated one can be disabled in the BIOS settings, if you mistakenly connect to this connector, the monitor will not turn on.

    Failure to load the operating system

    Another reason why the monitor does not turn on is a failure in the boot area of ​​the operating system. After starting the computer, the BIOS displays information about the testing and the monitor turns off until the operating system is loaded.

    This situation occurs due to a virus infection or damage to system files in the boot areas of the hard disk. To solve the problem, you need a bootable disk or flash drive with an installed antivirus scanner, for example, DR Web LiveDisk. If infected, perform a full virus scan. After boot the computer in safe mode and use a restore point to roll back to an earlier state.

    If no viruses were found during the scan, it is most likely that bad sectors have appeared in the area of ​​system files on the hard disk. It is necessary to scan and treat broken sectors using the Victoria or MHDD program.

    Graphics card problems

    If you are convinced that your monitor is working properly by connecting it to another computer, then the next link that is responsible for displaying the image on the screen is the video card.

    Important. To make your video card last longer, you need to monitor the temperature regime of the GPU. Overheating and dustiness can significantly reduce its service life.

    First, we check the density of its contact with the slot. If the problem is not resolved, plug the monitor into the integrated video connector (if available). Modern monitors have two outputs (VGA and DVI), so if your display was connected to a discrete video card using a DVI cable, and there is only a VGA input on the back of the computer, look for a VGA cable in the box from the monitor, it should be included Next, go into the BIOS, hold down the Delete or F2 keys when turning on the computer, and in the settings enable support for the integrated card.

    If the monitor works when plugged into a different connector, the problem is with the discrete video card and should be replaced. Please remember that when disconnecting the cable from the system unit, be sure to disconnect the monitor from the mains. Otherwise, there is a high probability of disabling the graphics processor of the video card.

    If there is no second video input, you can check the video card on another computer.

    RAM problems

    There are situations when when the computer is turned on, its indication lights up, but the screen does not turn on. At the same time, the system unit beeps. Many people might think that the problem is in the monitor.

    When the system unit beeps, this indicates that there is a malfunction in one of its components. The monitor has nothing to do with this. By the number of squeaks and their duration, you can accurately determine which PC component has failed.

    You may be misled by the fact that when the RAM strips fail, the power button on the system unit lights up, but the monitor does not turn on. Most likely, when cleaning the computer, the RAM bar was touched. If so, sit it tightly in place, otherwise replace it and everything should work without problems.

    Incorrect resolution settings

    It happens when you install a program, its window goes beyond the width of the screen. Therefore, for comfortable work with the program, the user includes higher resolutions that are not supported by the monitor. In this case, when the computer starts, the monitor will turn on, the BIOS logo will appear on the screen, the RAM and hard drives will be tested, but it will not come to loading the operating system, a black screen will appear.

    To solve this problem, start safe mode by holding F8 and return the video card resolution settings to their original ones. If they do not suit you and you want to increase the screen resolution, see the instructions for the monitor which it supports.

    Lack of power supply

    First, you should check the connection of the monitor to the mains. Perhaps during cleaning and rearrangement of the system unit, you caught the cable, so check the tightness of its inclusion in the electrical input of the monitor and in the outlet. Immediately make sure that there is a voltage of 220V in the power outlet by connecting an electrical appliance that has come to hand to it.

    If you are using an extension cord, make sure the power outlet to which the monitor is plugged in is working. There are times when some extension sockets fail. Connect the monitor to a known working one and see if the backlight of its power button is on.

    When you connect other electrical appliances together with the monitor to one extension cord, due to the heavy load, the monitor may not receive the required share of the voltage required to start it. To make sure of this, turn off all electrical appliances and see if this is the reason.

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    Next, check the electrical cable, it may be broken. To do this, take another and check if the light is on and the monitor is on. If the power button is lit and the monitor has not turned on, there is most likely a problem with the system unit components. If the light is off and the monitor does not turn on, the problem is with the monitor’s power supply.

    In most cases, the reasons lie in the condensers that have come out of standing (dried out). If you are a little versed in repair, you can find out on the Internet the marking of installed capacitors and their analogues, and re-solder them yourself. But still, in this case, it is better to contact the service center.

    Why the monitor won’t turn on when I turn on the computer

    Quite often, users are faced with such a situation when the monitor does not turn on. If the monitor displays a black screen or “No signal” appears, while the glowing indicators, the backlight of the power button and the noise of the operating system fans indicate that the computer’s operating system is loading. The topic is quite relevant, and like many other computer problems it does not have an unambiguous and simple answer. After all, other components of the system unit are responsible for displaying the image on the screen, in addition to the monitor. Failure of one of them leads to a black screen on the monitor, and the user may think that the problem is in it. Let’s consider the main reasons why the monitor does not turn on when the system unit is running and what to do to solve the problem.

    Unstable OS

    The unstable operation of the operating system can cause problems not only with the monitor, but also with many other components of the computer assembly. Because of this feature, it is extremely important to diagnose possible problems in operation in time and eliminate such malfunctions.

    Drivers, although they relate directly to the OS, are still separate software.

    An example of a Windows malfunction is a situation where the screen fades before the welcome screen. At the same time, the system boot indicator itself, as well as all possible BIOS controls, remain in working condition.

    You can get a few more details and ways to resolve this situation from a special article.

    In addition to the instructions provided, you should also use the services of checking the operating system for viruses. This is due to the fact that some types of malicious programs are capable of causing a failure to fully boot the system.

    In addition, you can take the opportunity to switch to safe mode and from there scan the system for viruses and then remove them using special portable programs.

    Do not forget that difficulties can also be caused by incorrect operation of the system registry.

    This is where we can finish with this method, since we have considered all possible general methods for correcting errors in the operation of the Windows operating system.

    Driver problems

    In some also quite common cases for PC users, the monitor itself works stably, but sometimes the image is severely distorted, showing various kinds of artifacts. Here the reason may well be a corrupted or completely absent driver for video memory.

    Drivers play an important role in the system, regardless of the type of GPU used.

    Guided by the special instructions on our website, diagnose the system for the lack of the necessary drivers.

    Subsequently, download and install the appropriate software for your GPU.

    As a last resort, you can use special software from third-party developers designed for in-depth diagnostics of the video card for any failures.

    Graphics card problems

    Conventionally, this problem can be divided into two parts at once, concerning discrete video cards and integrated ones. In this case, the approach to diagnosing and resolving a malfunction is usually always the same.

    After using the video card built into the motherboard, you should switch to using discrete memory as a test. If this is not possible, you need to find a suitable replacement for your motherboard, guided by the appropriate instructions.

    In the case of a laptop, if the built-in memory breaks down, you will not be able to switch to using a discrete video card yourself.

    If you have difficulty connecting the monitor to a discrete graphics processor, then you should disassemble the system unit and carefully examine the video card connector. Inspecting and cleaning the connector pins of the card, and installing it correctly, can help resolve screen issues.

    This is where we can finish with this section of the article, since if the problems persist, the only solution would be to completely replace the video card.

    Do not try to repair a faulty device yourself. this can provoke failure of other PC components.

    Cable faults

    This method is rather complementary, as it is partially related to a previous cause of the monitor malfunction. However, in this case, the risks of leaving the screen are much lower than with power supply problems.

    The possible problem is that the cable normally connected via HDMI may be damaged. For diagnostics, as well as solving this problem, try replacing the wire connecting the system unit and the monitor.

    Be sure to check that the image cable is securely connected to the correct connectors.

    Sometimes, in the case of connecting a modern monitor to old models of motherboards or video cards, it may be necessary to use special adapters. The reliability of the contact, as well as the serviceability of such an adapter, must be rechecked.

    If possible, try to connect another screen with good wires and connection interfaces to the system unit.

    Check if the monitor is working properly by connecting it to another PC.

    If you managed to start the screen with the described manipulations, this article ends for you.

    After completing the recommendations and confirming that there are no cable faults, you can proceed to the last possible technical problem.

    Fatal system errors

    The last way to solve problems with a non-working monitor is to completely reinstall Windows by using the exact same distribution kit. Immediately keep in mind that this approach is a kind of last resort in cases where other methods have not brought the desired results.

    The method will be relevant only if the screen fails to start from under the system when the device is working properly.

    To facilitate the process of removing and installing Windows, use the special instructions on our website.

    Power outages

    The most common difficulty in which the monitor does not start automatically when the computer is turned on is the lack of power. At the same time, this malfunction can be expressed in different ways, but in general, the screen itself will not be activated at all.

    In order to diagnose this kind of inoperability without unnecessary problems, pay attention to the power and operating mode LED indicators. If the monitor in any way shows the presence of mains power, you can go directly to the next method.

    This method under no circumstances applies to the laptop matrix, except for the cases of connecting external screens.

    In cases where there are simply no indicators on the screen, try disconnecting the monitor cable from the computer system unit. Provided that the device automatically started and presented a screen with an error message, you can safely proceed to considering problems with the video card or system settings.

    Considering all of the above, if the monitor does not show signs of stable operation, you should try changing the power supply cable from the monitor.

    A situation may arise that changing the network wire will not bring the desired results, as a result of which the only way to solve the problem is to contact specialists or replace the device.

    In addition to the named malfunctions, it is necessary to make a reservation that the screen can simply be turned off by using the power buttons.

    It is very easy to diagnose power outages by following prescriptions. The main thing is to remember to check for all possible power failures, including both the network cable and the power supply.

    Why does the monitor not turn on when I turn on my computer?

    Sometimes users of personal computers and laptops have problems with the fact that after turning on the power supply to the PC, the monitor does not automatically start. This difficulty can have a fairly large number of reasons for its occurrence, which we will try to describe in detail below, focusing on possible repair methods.

    Incorrect monitor settings

    Almost any monitor of a personal computer is equipped by default with special settings that allow you to edit some display parameters. It is because of the knocked-down settings that the screen may remain off or display a distorted picture during startup of your PC.

    To resolve this situation, you should refer to the technical specification of your monitor and reset the parameters to factory default accordingly. At the same time, remember that such parameters are not capable of causing difficulties, since all the necessary tools are located directly on the body and have the corresponding symbols.

    In case you cannot use the specification, we suggest that you familiarize yourself with our special instructions.

    In addition to the above, it is important to pay attention to the BIOS settings, which allow you to disable the GPU built into the motherboard by default. If your computer is equipped with a discrete graphics card, turn off the built-in memory in the BIOS or, as an option, reset the general parameters.

    There is no signal on the monitor when the computer is turned on due to damaged connectors

    One of the most difficult cases. If the connector on the monitor itself or the video card is damaged, then there is nothing you can do about it. you will have to carry it to the service or buy a new display with a card.

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    DVI and VGA plugs are thin pins and must be handled with care

    It’s good if the card is the main one, and you can switch the screen to the built-in one. But if this was the only port, and even an integrated card, then this is definitely a service.

    RAM problems

    often than not, the monitor won’t turn on due to memory issues after assembling or cleaning the computer. In particular, after installing RAM in its slot, it can be unreliable, as a result of which there is no contact. This is manifested by incomplete loading of the system.

    Incomplete snapping is enough to prevent the system from booting

    That is, it comes to the BIOS, which conducts self-diagnostics, finds a malfunction and does not allow the system to start as a whole. To fix, you just need to check if the memory bar is installed correctly, or pull it out and reinsert it until the fasteners are closed.

    The computer turns on, but there is no image on the monitor due to hardware damage

    Hardware problems inside the system unit are a serious threat. Actually, this can include a bunch of problems due to which the monitor will not turn on when the computer boots. Even incorrect processor mounting can affect this. But such a reason is rare, but we will consider the most common problems.

    The computer does not see the monitor due to software glitches

    Problems of a software nature are the easiest to fix because you can deal with it on your own. This type of problem is most often dominated by failures in the operating system.

    Software glitches are easiest to fix

    They can be of a different nature. violation of the integrity of drivers, viruses, or incorrectly set screen parameters. This can explain why the monitor does not turn on when the computer is turned on. In any case, the entire category of such problems is characterized by loading to the system. That is, Windows can start loading and immediately go to reboot, shut down or simply stop displaying data, while the PC will continue to function.

    Monitor does not turn on when computer starts. how to bring your electronic friend back to life

    Video card problems

    With a video card, the situation is similar to RAM. That is, if the connection density of the contacts is insufficient, the BIOS will also detect a malfunction and prevent the system from starting. The technology of the malfunction is the same. pull out and reinstall the video card.

    What to do if the monitor does not turn on due to connection problems or system unit

    Well, now let’s take a closer look at why the monitor may not start when the computer is turned on, and what to do about it.

    Dust off.

    If resetting the BIOS settings and the correct connection of the hardware did not help solve the problem when the monitor does not turn on, then look carefully if your computer is simply clogged with dust, try to remove the RAM modules and clean both the modules and the slots for RAM (random access memory).

    This is how RAM modules look like:

    This is what the slots look like when the RAM has already been removed:

    The slots can be cleaned neatly with a brush to get inside or just blow out the dust from there, and simply wipe the contacts of the RAM modules with an eraser. After this procedure, we insert the “RAM” back into place, just as they stood.

    It is also necessary to clean the cooling system from dust, especially in laptops, the cooler is heavily clogged with dust.

    Then look at the video card, or rather, into the slot on the motherboard where the video card cable is inserted, in the same way as with the RAM, we clean the contacts of the video adapter cable and the socket on the motherboard.

    Reset BIOS settings.

    The method is quite easy and often helps to solve this problem. Quite recently, one of my friends had just this situation with the ACER monoblock, the monitor light blinked when turned on, and the screen itself was black and did not want to turn on, although the coolers were noisy and the drive was working, in general I reset the BIOS settings and it helped.

    Once I already wrote a solution to such a problem, when the time gets lost, it is just connected with the BIOS battery, but now a little about something else, we need to reset the BIOS settings, which is quite simple to do, you first need to turn off the computer, turn off the network completely, even then open the lid of the system unit and inside, on the motherboard you will find a battery that needs to be pulled out for five to ten minutes.

    After this procedure, put the battery back in place and turn on the computer.

    And here’s how it looks on the motherboard:

    On computers, unlike laptops, it is often stuck vertically to the motherboard, making it difficult to find at times, so look carefully.
    In computers, by the way, basically only two types of batteries are used:

    Check contacts.

    Sometimes, it just happens that they don’t completely insert the RAM modules into the slots, or even completely forget to insert the video card cable to the motherboard after any procedures with the hardware inside the PC itself, usually this happens after cleaning the computer from dust. Of course, if the video card is faulty or not turned on, then this should be mentioned on the monitor itself. But sometimes this may not be the case.

    Also, the “RAM” should fit tightly and click a little, you do not need to hit it with a hammer or something else, it easily enters the slot, you just need to insert it straight and the latches should close. Do not forget to check the external contacts of the monitor with the system unit, the cable may come off, the socket may also be damaged or simply dusty.

    Solution to the problem: if the monitor does not turn on when the computer starts

    This article provides detailed solutions when the monitor does not turn on when the computer starts up, as well as practical tips for resolving the problem.
    (By the way, if, when you turn on, not only the monitor is black and one squeak of the BIOS signal, but emits a large number (from 2 or more) squeaks, then look at the meaning of your error code. BIOS sounds, because it may be something completely different. )

    Well, for those who have no reason to look at the BIOS error codes, and the monitor still does not turn on, there are slightly different solutions.

    ! First of all, check the performance of the monitor itself before following the steps below. You can check it very simply, thanks for this addition to the author of “Kub”, otherwise I did not think about the elementary thing that not everyone knows and knows how to check the performance of the monitor, in general, here is his comment:

    “A modern monitor is checked in an elementary way. the cables are disconnected from the system unit, the power is turned on and we press the favorite button died (POWER), the power light is on without blinking and the screen will display. there is no connection, or check the cable, etc if not, try to press the menu button. if there is silence and a black monitor, then 95% of the monitor is dead ”
    Well, then, accordingly, if the monitor has not died at all, then follow the following recommendations when the computer monitor does not turn on.

    Check power supply.

    Indeed, the inoperability of the power supply may be the reason that the computer does not turn on or, more correctly, it turns on, but perhaps it does not have enough power and due to this, only the lights flash, and the monitor does not turn on. Therefore, it is imperative to check the power supply for performance, fortunately, your very useful post was written by Dmitry Shemyakin on his IT blog, which will help you check the power supply.

    If nothing helps at all.

    It’s a shame, of course, but this situation happens quite often, like I checked the contacts and cleaned them from dust and the BIOS dropped, but nothing is plowing. The fact is that the motherboard itself or the video card may be out of order. Here, even before the breakdown, it was necessary to diagnose the video card for serviceability, when it only gave hints of a breakdown.

    As I said above, not all computers are able to warn about a malfunction of the video card, and here you need to take measures, first check your video card on another computer, or put another one for you and check whether the monitor turns on. And if it’s not about the video adapter, then there is nothing left but to change the motherboard.

    That’s all for today, I told you about how to solve the issue, if the monitor does not turn on when the computer starts, be sure to subscribe to blog updates so as not to miss the following materials.

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