When you turn on the computer, a black screen and beeps

Speaker’s aria or how to decipher a computer squeak

If your computer does not want to start and instead of the usual beep it gives out a series of incomprehensible squeaks, then something is wrong and you need to figure out where the problem is. This usually happens after a sudden blackout or the fall of the system unit on its side, sometimes just like that. It is good if the monitor turns on and the message can be read in plain and understandable English, but what if the computer does not turn on?

Fortunately, there is a hardware fault detection feature built into the motherboard BIOS. At the moment of starting the computer, a POST test of the equipment takes place. If something is wrong, then with the help of sound signals, an error message is transmitted through the system speaker (speaker).

What caused the beep

There are special tables to recognize the message and determine the type of malfunction. To work correctly with the table, you must at least know the name of your BIOS. If the computer turns on, then you can determine the name of the BIOS by the inscriptions at the initial stage of loading or in the instructions for the motherboard. At this point, you can enter the BIOS.

Depending on the motherboard, the BIOS can be Award (or Phoenix. Award, the same), AMI (American Megatrends, Inc), Phoenix BIOS, UEFI, or others. The most common are UEFI, Award and AMI.

Award and Phoenix-Award BIOS are presented something like this:

UEFI bios are made with a graphical interface, while the initial splash screen when the computer boots up can be very different:

The AMI BIOS is characterized by the following presentation:

And Phoenix BIOS can be recognized by this picture:

Please note that with such an interface there can be both Award and AMI and UEFI BIOSes:

We read what is written, if American Megatrends means AMI. If you have a different BIOS, then you will have to refer to the hardware manufacturer’s manual. Listen carefully to how the computer beeps and count the number of beeps. Then you can start looking for this sequence in the table.

Award beeps and UEFI BIOS

Signals Error and possible remedies
1 short Testing was successful
2 short Small remarks are possible. The screen may prompt you to enter BIOS and check the settings. It will not be superfluous to check the fastening of the cables of the hard drive, DVD-ROM and drive
3 long Keyboard not connected or keyboard controller error. If everything is in order with the keyboard, then repair or change the motherboard
1 short and 1 long Check and / or clean your RAM
1 long and 2 short Check your graphics card. Perhaps it is not firmly inserted into the slot or the fan is not spinning
1 long and 3 short The problem lies in the video memory system. You may need to repair or replace the video card
1 long and 9 short BIOS read error. You can try to take out the battery for half an hour. If it does not help, then reflash the BIOS or repair
Repetitive short Incorrect power supply output voltages or problematic RAM
Repeating long If the computer beeps with long beeps, then most likely the RAM is not working
Repetitive rolls from high to low frequency CPU problems
Continuous signal Obvious problems with the power supply, replacement is required

Decoding sounds AMI BIOS

Sound signals Errors and possible remedies
1 short It’s ok
1 long, 1 short Check power supply voltages
1 long, 4 short No graphics card found. It is necessary to check if the card is properly inserted into the slot
2 short RAM parity error. Check if the memory is installed correctly. Try turning off your scanner and / or printer
3 short An error was detected in the first 64KB of memory. Check if the memory is properly installed or replace the memory with a known working memory
4 short The system timer is defective. It is possible to repair the motherboard or replace it
5 short It is necessary to watch the central processor, perhaps a bad contact. You can try to get it out and put it back. If it does not help, then change the processor
6 short Keyboard not connected / defective or poor contact of the plug with the socket
7 short Defective motherboard or one of its components. Change or repair
8 short Error reading video memory. Try a different video card
9 short BIOS read error. Replacement or flashing of the BIOS chip may be required
10 short Error writing to volatile memory CMOS. You may need to replace the microcircuit or repair the motherboard
11 short Error in the work of the cache memory. The motherboard needs to be repaired.
1 long, 2-3 short Malfunction of the video card or poor connection of the monitor to the video card
1 long, 8 short Perhaps the video card is not firmly inserted into the slot
No signals, just a black screen If the computer does not beep at all, then this is a problem with the processor. Possible poor contact or bent / broken processor leg. Or you need to replace the processor.
Continuous beep Problems with the power supply or with overheating of the processor

Signals from Phoenix BIOS

Beep codes are represented by a sequence of the number of “beeps” (signals). For example 1-1-4 means one beep, pause, one beep, pause, four beeps

Sound signals Errors and possible remedies
1-1-3 Read or write error in volatile CMOS memory. Check the battery on the system board. You may need to replace the microcircuit or motherboard.
1-1-4 BIOS checksum error. Replacement or flashing of the microcircuit will be required
1-2-1 The motherboard needs repair or replacement
1-2-2 or 1-2-3 One of the DMA controllers failed. If the repair fails, you will have to change the motherboard.
1-3-1 The RAM test failed. Clean contacts or replace module or memory modules
1-3-3 or 1-3-4 Error reading / writing the first 64KB of RAM. Check your RAM
1-4-1 If you can’t repair it, you will have to change the motherboard
1-4-2 Check if the memory modules are installed correctly
1-4-3 System timer test failed, system board defective
1-4-4 There is a problem with one of the I / O ports. There may be a problem with some external device. Disconnect all external devices.
2-X-X (X is a number from 1 to 4) Error in the first 64 KB of RAM. Most likely you need to replace one of the memory modules
3-1-1, 3-1-2 or 3-1-4 Unable to initialize second DMA channel. If the repair does not work, you will have to change the motherboard
3-2-4 The keyboard controller has not passed the test, the motherboard is jittery
3-3-4 Video memory error. Check if the video card is installed correctly
3-4-1 Attempts to access the monitor failed. Check monitor connection
3-4-2 Video card BIOS initialization problem. Perhaps repair or replacement of the video card is required
4-2-1 System timer initialization problem.
4-2-3 Keyboard controller error.
4-2-4 Fatal error in protected mode CPU operation. Replace processor
4-3-1 Check your RAM
4-3-2 Problems with the first timer
4-3-3 Problems with the second timer
4-4-1 Error initializing one of the serial ports.
4-4-2 Parallel port test failed. Try unplugging your printer or scanner
4-4-3 The math processor has not passed the test. Replace processor
Long, repetitive signals Replacing or repairing the motherboard
The high frequency of the siren changes to low Malfunction of the video card. Video card repair or replacement required
Continuous signal Check if the CPU fan is running / connected

If you have not found the desired sequence of sounds, then you need to look for instructions for your computer. After checking the sequence of signals in the table, try to determine what the malfunction is. If you are not confident in your abilities, then without experience it is better not to go into the jungle, but to trust the master. And to gain experience and independently solve computer problems, subscribe to blog updates.


In case of failure of one of the modules or poor contact of the RAM strip with the slot, the system “does not see” it, however, it determines that the slot is occupied. The laptop beeps, letting the wearer know to fix the defect. Usually, it is enough to wipe the connectors on the RAM strip with an eraser to restore normal contact with the slot.

If one of two or more modules fails, the faulty one must be dismantled or replaced with a new one. If a single memory stick is installed in the computer and it is broken, the device simply will not turn on.

Computer turns on but the screen stays black after 2 beeps fix


If the temperature of some component rises above the critical one, it begins to lag during operation. Accordingly, the laptop beeps and may not turn on, insuring expensive components from damage. The reason usually lies in the clogging of the “internals” and the cooling system with dust, when air cannot circulate normally inside the case.


  • Short beep. No errors.
  • Long and short signals. Checksums of the CMOS chip are not checked.
  • A couple of short ones. Global Error, the system is unstable.
  • Long and a couple of short ones. The video adapter does not start.
  • Seven signals of different duration. Graphics chip is not working properly.
  • Long continuous. RAM error.
  • Short and a couple of long ones. Hardware RAM lags.

This BIOS model does not give any signals in the absence of errors. the laptop boots silently if everything is normal. The appearance of heterogeneous squeaks already hints at problems.

  • One. CPU registers are incorrectly tested.
  • Pair. Keyboard Controller Buffer Problems.
  • Three. Keyboard controller lags.
  • Four. No signal from the keyboard.
  • Five. Keyboard Input Problems.
  • Six. The motherboard is not working properly.
  • Nine. Checksums in the CMOS chip do not match.
  • Ten. System timer not working.
  • Eleven. The chipset is not working properly.
  • Twelve. Incorrect test of the RAM power register.
  • Long. DMA Controller Problems 0.
  • Long and short. DMA 1 malfunction.
  • Long, a couple of short ones. Can’t extinguish time-lapse reverse.
  • Long, three short. Video memory problems.
  • Long, four short. GPU polling problems.
  • Long, five short. RAM error.
  • Long, six short. Interrupt vector not loaded.
  • Long, seven short. Graphics subsystem does not start.
  • Long, eight short. Video memory is out of order.
  • One short beep and blank screen. Graphics adapter problem.
  • A pair of short ones. The same.
  • Three long. Problems polling the system board.
  • Long and short beeps. Motherboard malfunctions.
  • Long, a couple of short ones. The graphics subsystem does not work.
  • Long, three short. Similar.
  • Continuous short beep. Defective battery or power supply.
  • Continuous squeak. Same.
  • No signal. No power.
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It is worth noting that AMI or Award BIOS are most often found on laptops of different brands. All the rest are rather “exotic”, which can be found very rarely, and some only on outdated laptop models.

How to fix a beeping sound when you turn on your laptop

If the laptop beeps when turned on, this always indicates a malfunction. The only exception is a single short squeak that the device emits if no problems are found. In this manual, we will look at why when you turn on the laptop, the microphone turns on and yells, how to decode various signals and what is fashionable to do when they appear.

Decoding of fault signals

At the moment, there are several models of BIOS that are being developed by different companies. Their sound signals are different. Typically, this is a series of long and short squeaks with pauses in between. The exceptions are Phoenix and Dell BIOS, which only send short beeps with pauses in between.

You should focus on the number of short squeaks that follow after pauses. They sound quite rhythmically, so it is difficult to confuse with another signal.

UEFI, a graphical shell for BIOS, has not changed in terms of sound. The same signals are given as in the “bare” BIOS, which differ from developer to developer.

  • 1-2. There is no contact with the video card. The component is de-energized or the loop is broken.
  • 1-2-2-3. Incorrect checksum when checking the microchip CMOS. Problems with the BIOS itself.
  • 1-3-1-1. Incorrectly determined RAM slats.
  • 1-3-1-3. Incorrect polling of the keyboard or mouse.
  • 1-3-3-1. Damaged RAM.
  • One. Hardware check completed, no errors found.
  • Two. RAM parity test error. The problem may be cleared after restarting the laptop.
  • Three. Lags first 64 KB, boot sector of RAM.
  • Four. The system timer of the motherboard is buggy. It may need to be replaced.
  • Five. CPU Problems.
  • Six. Lags of input devices, keyboard or mouse.
  • Seven. Motherboard error.
  • Eight. Problems on the graphics adapter side.
  • Nine. Checksums are not checked in BIOS.
  • Ten. Error communicating with the microchip CMOS.
  • Eleven. External cache is not working properly.

Other signals:

  • One long, two short. Graphics accelerator not found by the system.
  • One long, three short. the same.
  • One long, eight short. Failed to poll the memory of the video adapter.

Features of fault diagnosis

In most cases, the signals given by the laptop when an unsuccessful attempt to turn on will help to make the correct “diagnosis”.

With the correct decoding of conditional squeaks, the search for a faulty module is reduced to a list of two or three components. The only problem that may arise is that the speaker is not connected or burned out during operation. You can replace it with a similar one, but you have to disassemble the laptop to get to the motherboard.

Sticky keys

The pressed key can remain in this position, giving a continuous signal to the motherboard. Spilled liquid or accumulated debris is often the cause. In any case, the contacts are closed, and the laptop cannot work normally, giving a beep.

The computer turns on but there is no image on the monitor.

Consider a situation in which the computer turns on, but there is no image on the monitor, while the fans are spinning, the lights are blinking, it is beeping about something (or not beeping). The first thing we pay attention to is whether it beeps when turned on.

turn, computer, black, screen, beeps

The absence of a squeak when turning on the computer may indicate a malfunction of the BIOS or motherboard, or that the speaker is simply not connected. If the computer beeps when you turn it on, then the cause of the malfunction can be determined by the number of signals.

The easiest option, when when you turn on the computer, it squeaked once. this means that the hardware check was successful and you just have to check whether your monitor is turned on (whether the power cord is firmly plugged in, and whether the on button is turned on on the monitor, sometimes what). Further, the suspicion falls on the cable that goes from the video card to the monitor (check if the plug is tight, you can pull / insert it from the connector, and also check for physical damage). If it does not help, then the problem is most likely in the monitor, and in order to check it is best to take a knowingly working monitor from a neighbor / friend to check.

If the computer emits more than one signal when turned on, table 1, table 2, go to one of these links and compare them according to the table.

The computer turns on, the fans are spinning, the lights are blinking, no squeak is heard and no image on the monitor.

3.1. First of all, we perform the actions from clause 1. If, after you have removed the VGA cable, a sign with the inscription “NO SIGNAL” appears on the monitor, there is no need to look for another monitor to check.

turn, computer, black, screen, beeps

3.2. We open the system unit, and carefully examine the mother for the presence of swollen / leaked capacitors.

If there are no such, look further.

3.3. We distort all the boards (RAM, video card, network card), take an eraser and clean the contacts, at the same time, you can vacuum up the dust if it has accumulated. We put it back in and try to turn it on. If it does not help, we continue to search.

3.4. Next, you need to check the performance of the power supply unit, RAM and video card. To do this, you need obviously working analogs in order to check on your computer, or check yours on another. Thus, we identify the culprit, if the check showed that everything works, then the problem is in the motherboard.

Comment added: vet
Date: 2012-02-15

Comment added: muhas
Date: 2012-12-06

I had such a problem. in how section 3. all coolers work. but in the dark) was the reason with the power supply? Why is that? BP is dead?

Comment added: Alexey Zemlyansky
Date: 2012-12-07

muhas, there can be many reasons, to determine what the problem is, check the points.

Comment added by: Denis
Date: 2013-02-27

and you can also try to pull out the battery to reset the BIOS settings, it often helps

it helped me a lot, turned on right away thanks

Comment added by: andrey
Date: 2014-12-04

Comment added: maxim
Date: 2015-02-20

Comment added by: pavel
Date: 2015-04-09

Help the people, the computer turns on and there are no images and not any squeaks

Comment added by: Vitaliy
Date: 2015-04-20

Thank you very much, it helped to remove and insert the battery 🙂

Comment added by: Vlad
Date: 2015-12-10

The computer turns on, you can hear the fans and the music of Windows startup and skype, but the monitor does not work, but when you restart, I touch on the safe mode and everything works what could be?

Comment added: Alexey Zemlyansky
Date: 2015-12-10

Vlad, video driver, or incorrect display settings. The easiest option. uninstall the video driver in safe mode, then reinstall.

Comment added by: Maxim Nikulin
Date: 2016-04-14

Help the people, the computer turns on and there are no images and not any squeaks

Comment added by: Victor
Date: 2016-07-20

Everything is new and the monitor outputs VGA no signal

Comment added by: Ilya
Date: 2016-06-07

Folks, I have the same problem, but none of the techniques helped. No swollen capacitors, no problems with other components. Resetting the BIOS does not help.

Comment added by: Alexander
Date: 2019-10-19

Computer beeps when turned on

The computer does not start and the system unit beeps strangely when you turn on the power? Or is the download going on, but it is also accompanied by a strange squeak? In general, this is not so bad, more difficulties could be if the computer did not turn on without giving any signals at all. And the aforementioned squeak is BIOS signals that tell the user or computer repair technician what kind of computer hardware there are problems with, which makes it much easier to diagnose problems and fix them. In addition, if the computer beeps when it is turned on, then at least one positive conclusion can be made: the computer’s motherboard has not burned out.

These diagnostic signals are different for different BIOSes from different manufacturers, but the tables below are suitable for almost any computer and will allow you to understand in general terms what problem has arisen and in which direction to move to solve it.

Signals for AWARD BIOS

Usually, a message about which BIOS is used on your computer appears when the computer boots. In some cases, there is no inscription notifying about this (for example, H2O BIOS appears on the laptop screen), but even then, as a rule, this is one of the types listed here. And given that the signals practically do not overlap for different brands, it will not be difficult to diagnose the problem when the computer beeps. So, Award BIOS signals.

Signal type (as the computer beeps) An error or problem, which corresponds to this signal One short signal of errors during startup was not detected, as a rule, after that the computer continues to boot normally. (Provided the operating system is installed and the bootable hard disk or other media is working) two short errors encountered during boot, which are not critical. These may include problems with the contacts of the loops on the hard disk, time and date parameters due to a dead battery and other 3 long beeps Keyboard error. it is worth checking the keyboard is connected correctly and its serviceability, then restart the computer 1 long and one short Problems with modules random access memory. You can try to remove them from the motherboard, clean the contacts, put them back in place and try again to turn on the computer one long and 2 short Video card malfunction. Try to remove the video card from the slot on the motherboard, clean the contacts, insert it. Pay attention to the swollen capacitors on the graphics card. 1 long and three short There is some problem with the keyboard, in particular during its initialization. Check if it is properly connected to the computer. one long and 9 short An error occurred while reading the ROM. Restarting the computer or changing the firmware of the read-only memory chip can help. 1 short, recurring malfunction or other problem with the computer’s power supply. You can try dusting it. Power supply may need to be replaced.

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What to do if your computer makes a sound when you turn it on?

You can try to solve some of these problems yourself if you know how to do it. There is nothing easier than checking the correct connection of the keyboard and monitor to the system unit of the computer, it is somewhat more difficult to replace the battery on the motherboard. In some other cases, I would recommend contacting a computer help professional who has the necessary professional skills to solve a specific computer hardware problem. In any case, do not worry too much if the computer begins to beep for no reason at all when turned on. most likely, this can be relatively easily fixed.

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Hello. Mother wg34m, stood dual core E5700, changed to Core 2 Quad Q6600. When turned on, there is a continuous squeak, nothing is displayed on the monitor. Everything works with the old process. What could be the problem?

Found only this with your own situation (I think you saw it too). cyberforum.ru/hardware/thread2333811.html

I was looking for how to make the buzzer beep for fun. In general, when the computer is turned on, it beeps one short time, I did not read the instructions, but I think this means that everything is ok, I start Since I have not seen any errors and everything works

Hello. The problem is this, about 3 months ago, a nasty high-frequency squeak began to be heard from the system unit. You know what happens when the ear is blocked at high pressure. I can’t pinpoint the source. either the power supply unit (Power Man 600w), or the video card. The power supply unit in my case is at the bottom, so it is difficult to determine whether it is a video or a power supply unit. It squeaks without load, in idle time, when you watch a video on YouTube, for example, the squeak becomes noticeably quieter, it can even disappear when the browser is open, it is also quieter, but completely without load, in idle time, it squeaks noticeably, it hits the ears straight. I understand that it is difficult to make a diagnosis from behind the eye, but tell me at least, is it not dangerous to continue using the computer? God forbid, the power supply unit will fly, it has a nasty feature to take with you to the grave something else from the components.

Unfortunately, there is no answer here. What you hear is called Coil whine (there are articles in Russian on the network on the topic), but different components can publish it: a power supply unit, a motherboard, a video card, or rather coils / electronic components on them. I lean towards BP, but you can’t be sure here.
over, sometimes it turns out that this is not a coil whine, but a sudden contact of two resonating and vibrating elements inside the case, conditionally, the cable is leaning against some metal surface vibrating with a high frequency.

As for whether it is dangerous, it is also difficult to say unequivocally: if it were so with you when buying, I would say: not lucky, but not dangerous, it happens. But what has appeared only now can speak of some changes and it is impossible to exclude the failure of something.

You are simply the best, otherwise I was already scared and it was just that I inserted the RAM incorrectly

Hello. The problem is with an absolutely working computer, after turning on with an interval of 10. 15 minutes, it emits one squeak. and so it can squeak all day.

Hello. I have a problem, when I changed the thermal paste of the video card, when the PC is turned on, it beeps once, for a long time. I have a phoenix BIOS, I did not understand anything from the above, can you explain?

Did you take out the processor? If so, it may be incorrectly installed. It is also worth checking if the video card is well installed and if there is additional power to it.
But in general, depending on the specific motherboard, the codes may be different. In any case, most likely they made a mistake somewhere.

Hello. I have a problem. For a week in the morning at 9-15, the laptop starts to beep. At the beginning there is a beeping with a small interval, then the interval is reduced and after that there is generally a continuous beeping. In the evening there is no pican. I turn off the sound, it still picks.

Isn’t the battery accidental? (suddenly discharged overnight?). In general, if you have Windows 10 or 8 (8.1), try disabling Fast Startup (like this: https://remontka.pro/fast-startup-Windows-10/) and see if the problem persists.
It is also worth installing all the original drivers of the chipset and system components, power management from the official website specifically for your laptop model.

thank you very much for the advice! I’ll try to do it all


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Reasons why the laptop beeps

The source of the squeak is the speaker. a small element on the motherboard whose purpose is to generate audible signals when a malfunction is detected. By the nature of the signals, using a special table, you can diagnose the reason why the laptop does not turn on. Among the most common reasons are:

  • Keyboard malfunction (key sticking).
  • Failure of the cooling system, leading to overheating of critical components.
  • Incorrect BIOS settings.
  • Problems with RAM, video card or other board.
  • Power supply error.

To determine the possible reason for the beeping and the inability to turn on the laptop, find the beep table for your BIOS version. You can find out the BIOS version using any search engine for the laptop model.

When the table is in front of your eyes, you need to count the frequency and number of sound signals, and then find the corresponding value and familiarize yourself with the probable cause of the problem and how to fix it.

Reset BIOS

Resetting the BIOS to factory defaults can fix a variety of startup problems. However, you can perform this procedure yourself only if the laptop turns on, but does not load the operating system.

    Go to the BIOS by pressing the Delete key when turning on (the key to enter the BIOS is indicated on the boot start window).

Resetting the parameters, in particular, resolves the CMOS error and other problems in the BIOS, so be sure to try this method of eliminating the squeak.

Cooling system check

Make sure that the cooling system of the laptop is working correctly: the exhaust vents are not clogged with dust, and the thermal paste on the CPU and video card is not dry. Find the disassembly instructions for your laptop model and gently dust it off. If you are afraid of damaging something, take the laptop to a service center to carry out a high-quality cleaning of the case from accumulated dirt.

The laptop beeps continuously or several times when turned on. Reasons and repairs in St. Petersburg

Let’s figure out why your laptop, when turned on (booted), beeps continuously or makes sounds (beeps 2, 3, 5, 8 times), as well as try to fix the problems ourselves.

When turned on, the laptop emits a single beep, signaling that the device is working properly and ready to work. But sometimes users are faced with the fact that the number and frequency of repetition of squeaks increases, and the laptop refuses to turn on or load the operating system.

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Type of service provided Cost (rubles) Period of performance Guarantee period)
General table of for laptop repair
(not tied to a specific model)
Troubleshooting IS FREE 15 minutes to 2 days
Reballing or replacing the video chip (the problem is with the video card, there is no image) From 5500. 7500 1 to 10 days Up to 90 days
Moisture has got under the cabinet (cleaning or replacing components) 1500 to 6500 2 to 7 days Up to 60 days
Replacing the keyboard (moisture got in, buttons damaged) From 3500.6500 1 to 3 days Up to 60 days
The laptop is getting hot / overheating (replacing thermal paste and cleaning the cooling system) 1700 1 to 5 days Up to 90 days
USB port not working (software errors) 1500 From 30 minutes to 1 day Up to 30 days
USB port does not work (repair / replacement of the south or north ports) 5000. 7500 2 to 4 days Up to 90 days
Replacing or repairing the charging connector (laptop won’t charge) 2500 From 40 minutes to 2 days Up to 60 days
Replacing the hard drive (laptop won’t boot) 4500-5500 1 to 2 days Up to 90 days
Reinstall Windows / Mac OS / Drivers (laptop buggy) 1500 1 hour to 2 days Up to 30 days
Saving information (recovery) From 1000 1 to 3 days
Please note: the table shows the general for laptop repair without reference to any model and manufacturer. details can be obtained from the employees of our service center.

Eliminate the squeak of the laptop when turning on yourself

Disclaimer: We are not responsible for your actions. This article is for informational purposes only and does not call you to action.

We have identified the main reasons for the appearance of a squeak, now let’s see how you can eliminate them. Let’s start with the keyboard. conduct an external inspection for damage or liquid ingress. A stuck key can be carefully pulled out using a thin object (in cases where the keyboard does not fit as a module), while a flooded or badly damaged keyboard will most likely have to be replaced. It is better to replace it in a service center using special equipment.

Problems with RAM or other modules

If, using the beep table, you determine that RAM is the cause of the problem, then follow these steps:

  • Remove the RAM module compartment cover or completely unscrew the back of the laptop.
  • Locate the memory module and gently remove the securing clips to remove it.
  • Dust the board and insert it back at a 45 degree angle.

Do the same with the other components of the laptop: carefully disconnect them from the motherboard, clean them from dust and reinstall them. As for the power supply: if it does not work, then you will have to replace it with a new one, since repairing the adapter will cost about the same amount.

Problems with Windows or drivers

When the PC starts, a boot screen appears in front of you (where it is written, with which button you can call the BIOS), then the logo of the Windows operating system being launched, and after it boots only the cursor is displayed, but you can call the Task Manager.

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Try starting File Explorer manually:

  • Opening the Task Manager.
  • From the File menu, select Create New Task.
  • In the text line of the window that appears, write explorer and press Enter.

Did not help? Let’s use Safe Mode. To get into it, reboot, then press F8 for several seconds. When a screen appears with a list of launch options, select the appropriate.

If everything succeeded, we are looking for the application or driver that caused the problem (remember what you installed or updated before it occurred).

Often, rollback of the system state, resetting it (if it is Windows 10) or reinstalling it helps here.

The last thing to try is to reset BIOS settings.

The option is more suitable for ordinary computers (maybe the picture is displayed on a second device, not the main monitor), and not laptops, but it can still help someone.

  • When the system starts, we try to open the BIOS configuration menu using the appropriate key.
  • After a couple of seconds, press F9 to reset the settings.
  • Press F10 to exit the configuration menu.
  • Press Enter to save the settings.

If it does not help, then in the 4th step you need to press the cursor left or right to select a positive answer (in some models, the default option is “No”).

Also make sure you are pressing the correct button to bring up the BIOS. This will help the instruction manual of the device.

Replacing BIOS

If the error in the system is critical, in some cases only flashing or replacing the BIOS chip helps.


If the laptop does not boot, then the reason may lie in the cooling system. Clogging with dust, debris, mechanical damage caused by impacts when the laptop falls, cause the processor to overheat. If a cooling system is used to remove heat from the graphics card, then it can also fail.

When the laptop beeps when turned on, the reason may be due to damage to the RAM. In such situations, we are talking about violations of the contact between the motherboard and RAM. Less common reasons for the appearance of extraneous sounds when you turn on include a failure of the motherboard, incorrect settings in the BIOS.

  • Remove the cover from the RAM module. The back of the laptop can be completely unscrewed.
  • We find the memory module, removes the clips carefully to remove it.
  • We clean the board from dust, insert it back at an angle of 45 degrees.

The same process can be performed with other components of the laptop. They must be carefully disconnected from the motherboard, cleaned from dust, and then reinstalled.

Often, in addition to the sound signal, the screen does not work on the laptop. This point should be considered in more detail. First of all, you need to check the power supply settings for mains and battery operation. Setting the screen brightness.

When the screen does not work on a laptop, you should check in which positions it is inactive. If the matrix cable is damaged, the display will show information only if certain conditions are met. This also applies to the position of the cover.

If the laptop has a black screen, then you need to connect it to an external monitor. Check if the image is displayed on it. If so, then the problem is a faulty matrix or cable. In the absence of an image, the probable breakdown lies in the hardware, often the reason is the video card.

During power-on, you can hear the loading of the operating system. In this situation, the malfunction is related to the video card. When the absence of the boot process is obvious, the indicator responsible for the operation of the hard drive does not respond, then the problem is in other states.

The power button may break, which stops responding to pressing. Often the problem is caused by contamination.

Dust problem

The fan blades and radiator tubes with fins are covered with dust, which reduces the thermal conductivity of the metal and the efficiency of removing warm air from heated power elements.

We’ll have to remove the bottom cover of the device and get rid of dust using a can of compressed air, cotton swabs (just don’t leave any lint) or a pile cleaner with a hairdryer.

If you are going to blow, it is better to take the laptop outside or on the balcony.

It is also recommended that every two years (each service center and manufacturer will set the terms independently) to replace the terpopast, which is located on the contact pad between the central processor and the cooler.

It is better not to replace the heat-conducting paste at home, if you do not have such experience, it is fraught with consequences.

What does “squeak” mean??

A small tweeter makes a squeak. It is located on the motherboard and is called a speaker. It looks like a small barrel, and is designed to signal this in case of malfunctions.

A speaker that emits a squeak in the computer system unit

The emitted sound hides information about the nature of the breakdown. If you know which company released the installed BIOS, and distinguish the tone of the sound, then by determining its duration, you can determine what exactly failed, and what are the reasons. To find out which BIOS is installed on a laptop, you need to use the documents that were provided with the purchase or use the Internet. Below are tables with the described sound signals, in which information about the nature of the malfunction is “encrypted”. Different manufacturers have their own table:

Award BIOS

enter the CMOS Setup Utility and correct the situation.
Check that the cables are securely attached to the connectors of the hard drive and the motherboard.

Input device

If the laptop beeps during power-on, the most common reason is the keys get stuck. This is due to clogging or spilled liquid. As a result, the contacts are closed.

A good option can be considered a case when moisture remains only on the keyboard and does not penetrate into the case. With the latter option, the problems that appear can be very serious.

RAM malfunction

You can try to clean the RAM yourself. Unplug the device from the wall outlet and remove the battery. Then remove the cover from the memory bay at the bottom of the chassis and remove the RAM modules. Clean them from accumulated dust and insert back. If after turning on the problem does not disappear, then the reason is the breakdown of the motherboard, you cannot fix it yourself.

The POST chip, which stores the BIOS code, controls the startup of all computer components and checks their performance. Therefore, if the POST (Self Test Program) finds a fault, it beeps to the user.

All components are checked, including RAM modules, processor, video card and computer motherboard. If the squeak that the laptop emits is short, this is just a signal about the successful completion of the check and transfer of control to the operating system installed on the laptop.

What to do if the computer turns on but does not start and does not beep, and the fans are running?

A situation in which the computer allegedly turns on, but the image does not appear on the screen, although the fans are running, is the most common computer breakdown. At the same time, very often the screen displays a transition to sleep mode.

There may be several reasons, from the most innocuous, which will be solved by cleaning the contacts, then quite serious and costly, when you have to change the motherboard.

In this article, we will consider all possible options for diagnosing and eliminating this malfunction at home, which will help you solve this problem yourself.

How to fix the problem and where to start?

Many may not believe it, but according to statistics, in 60% of such situations, the problem is corrected by cleaning the contacts and rearranging the RAM modules.

To do this, you need to turn off and open the system unit. Next, we find the strap / strips of RAM, remove it, wipe the contacts with a dry eraser or just with your fingers and insert it back.

One of the possible reasons is poor contact of RAM

Trying to turn it on. If there is no result, then it is worth trying to put the memory module in the adjacent slot. If several memory modules are installed, then try to insert them one by one and into different slots.

It will not be superfluous to reset the BIOS settings by removing the battery for a few minutes.

Removing the computer motherboard battery

Also note if there are any swollen capacitors on the motherboard. In the case when they are. the problem is in the motherboard.

One of the reasons is a swollen capacitor

If cleaning the contacts and rearranging the memory modules did not work, then check if a speaker is installed on your motherboard, which emits signals when the computer is turned on.

External computer speaker on motherboard

If there is a speaker, remove the RAM and try to turn on the PC without it. Is the speaker silent? So things are bad. Most likely problems with the motherboard, although it would be worth trying to change the power supply by borrowing it for a while from friends or neighbors purely for checking.

Locating the power supply in the computer case

If the speaker emits at least some sequence of signals, then here is a table for you, according to which you can decipher what the problem is.

If there is no speaker and there is no way to install it, then after the RAM, try to change the power supply to a known working one. Pay attention if the pins of the 4-8 pin processor power plug are not burnt.

Next comes the turn of the video card. As in the case of the RAM, we remove it from the connector, wipe the contacts and insert it back. If the motherboard has a built-in video card, then we try to turn on the PC from it by pulling out a discrete.

The presence of a monitor connector on the back of the computer is a guarantor of the presence of a built-in video card on the motherboard

If none of the above helped, you checked the monitor, as well as the reliability of the cable connection, and at the same time, including the computer, a black screen is displayed, and the coolers are working, then with a probability of 95% we can say that the motherboard is out of order and it need to replace.