What to do if the screen is dark on the computer. Computer won't turn on black screen

Sometimes you can observe a rather strange and frightening phenomenon - you turn on the computer as usual, but instead of loading Windows, a black screen appears when you turn on the computer. Often, it displays a list of various boot options, from which you should choose the one you need.

The appearance of a black monitor is already a direct signal of the presence of errors, which can be very negative impact to the operation of your device. However, you should not immediately panic and reinstall the system.

As a rule, such a malfunction can be solved independently, without significant effort. Therefore, further we will consider what to do if you are faced with this trouble.

Black screen when turning on the computer - why does it appear?

First of all, you should understand what can provoke such a phenomenon. The reasons can be very diverse. However, one of the most common is that the computer was shut down incorrectly. It is worth noting that the user is not always to blame here. Just a sudden power outage is enough to cause a black screen.

Computer virus infection

We should not forget about the enemy of every user - computer viruses. Some can cause serious disruption whole system and provoke the appearance of all kinds of errors. Therefore, you should try to use the most reliable anti-virus tools and not be lazy to constantly carry out a comprehensive scan of your device for viruses.

Perhaps the contacts have gone?

If the computer turned on as usual, and a single squeak was heard from the system unit, indicating that the computer had successfully booted and was working, nothing is displayed on the monitor, you need to check the monitor itself and its connection.

Make sure that the cable is tightly connected to the system unit. Often, when moving a computer from one room to another, it is possible to connect all the components insecurely. You need to check the cables for damage. It makes sense to try to turn on the monitor without connecting it to the computer. If signs of life come from it and a message is displayed stating that there is no signal, then there is no problem in it.

Now consider the situation when, after turning on the computer, Windows does not load, but only a black screen appears with possible boot options.

System or program failure

Such a black screen is already a signal of the presence of operating system problems. Looking carefully, you can see in it a list of various boot options, from which you have to choose the right one. First of all, you need to make sure that the system can turn on in safe mode. After the computer has turned on, periodically click on the F8 key, thus opening a menu with additional boot options. After that, using the arrows on the keyboard, you should select the item called " Safe mode", then press "Enter".

Safe mode will come to the rescue in case of problems regarding the system. It can be especially useful if the gadget has been infected with programs that are harmful and interfere with the normal functioning of the system. In this mode, you can run the wizard and get rid of many problems.

There are several various options, which can be used to launch different types safe mode.

1. The first on the list is the standard “Safe Mode”, which is often used. A minimum of various applications and services are launched here. However this mode does not imply Internet access.
2. The next one on the list is "Safe Mode with Networking". Here you can already use the Internet. In addition, there is a "Safe Mode with Command Line Support". Here you can apply various commands to control the system. Often, administrators give preference to this item.

So, you have selected the required mode and you have loaded from it. If, as usual, the desktop appeared, there is a possibility that it appeared due to a certain glitch in the programs. If a particular program was recently installed, after which, during subsequent system startups, the above screen appeared, the problem may lie precisely in it. Here best solution it will be a simple removal of such a program or driver to fix the error.

When the download is completed in the required mode, I advise you to conduct a comprehensive scan of the device for the presence of viruses in it, using the appropriate utilities. In addition, it does not hurt to check the registry for the presence of dangerous codes.

Nothing appears on the desktop - no shortcuts

Sometimes you may encounter the fact that, although the black screen no longer occurs, nothing is displayed on the desktop - no icons, no Start bar. However, this can also be fixed by simply following the steps below.

• Press the combination of Ctrl, Shift, and Esc at the same time. A window will appear with the task manager, in which you have to go to the first tab, as shown in the figure. Next, click on the "New task" item, and then type the "regedit" command in a new window.

• Navigate to the registry directory in the following path:

In this directory we find a parameter called "Shell". It should contain only one value - "explorer.exe". If other values ​​are found there, they must be deleted, and the parameter is saved with only one, the above-mentioned value.

Blocking the system and task manager

Sometimes a rather unpleasant situation occurs when the task manager is blocked and cannot be opened, and safe mode does not start. However, here you can easily fix everything.

There is such a thing as sticking the Shift button. Five times in a row, at short intervals, by clicking on this button, the sticky buttons window will open. Follow the link at the bottom of the window.

• In the next window, in the upper right corner, there will be a search field. It should print "Task Manager".

• Next, you need to go to the item called "System".

• In the left part of the window, select the section called "system protection".

• After that, it remains only to perform a system restore using previously created checkpoints.

Video adapter malfunction or "crooked" driver

Sometimes the cause of a black screen may lie in a malfunction of the drivers for the video card, which is why there are all kinds of problems with the monitor, including its blackness. Therefore, this option also deserves attention.

Fake copy of Windows

If you become the owner of a pirated Windows, after performing certain updates, you may receive a black screen with a message stating that the version you have is not genuine. If you are overtaken by such a problem, the best solution would be to use the licensing system.

Damage to internal elements

If suddenly none of the above methods helped to find the black monitor problem, and after checking you made sure that there are no viruses, you should inspect all the details directly in the system unit.

It is necessary to check that each of the cables and wires located, both outside and inside the system unit, is intact and not damaged in any way. In addition, it is useful to make sure that there are no damages on the connectors and ports.

Before proceeding with the inspection, it is necessary to turn off the power, and only then remove the cover of the system unit. You should examine all the elements of the motherboard and check for even the smallest damage to them. Since the system unit is constantly clogged with dust, you should clean everything as carefully as possible.

It also doesn't hurt to check the wires connecting the various parts inside your computer. They must certainly be completely intact, without damaging the insulation. You should make sure that their connection is not stretched.

Sometimes it may happen that one of the available modules random access memory broken. You should extract all modules and test each one separately. However, it often happens that by cleaning the trims and installing them again, everything works again. When the computer has not been used for a long time, the CMOS battery may run out. She can be found on motherboard, and, in this situation, it can also be replaced with a new one.

Perhaps these are all the main steps that an ordinary user can do without turning to specialists in the event of a black monitor. Since the described malfunctions are quite common, they are the most probable cause such a phenomenon.

Speaking on behalf of a computer repairman, it is worth noting that when repairing an unfamiliar device, it is difficult to guess in advance how it was treated. Therefore, the cause of the problem may be the most unexpected.

The two cases described below may well win the award for the most unusual reasons for a computer to fail. However, thanks to them, you can clearly understand how every little thing can cause serious problems in the operation of such a complex device.

In each of them, the reason lay in the sticking and clogging of computer elements with a foreign substance, or, in simple words, dirt. In the first of the cases, it ended up on the tracks of the motherboard, and in the second, on the video card. This caused the black screen to appear when the computer was turned on.

It is worth noting that the term "dirt" means any substances or small objects that are not provided for by the design of the PC. As a rule, this is dust, but there are also rather strange situations. Here it was difficult to determine where this dirt came from, but, having carefully cleaned such a substance with a cloth soaked in alcohol, the computer turned on without any problems and began to work in the usual mode, and still functions perfectly.

In the second situation, we encountered such a phenomenon when we purchased a dozen used video cards for terminal buyers. After the acquisition, they began to check, and it turned out that three of them were not working. An examination of non-working samples immediately began, and something rather suspicious was noticed in the corner of the board.

You can take a closer look at it in the following picture:

Here you can see the dirt adhering directly to the tracks of the board. Taking into account the previous situation, we decided to repeat the procedure for cleaning the faulty video card. After all, it is likely that it was because of this incomprehensible substance that the computer's performance was disrupted, and its full load was replaced by a black screen.

Familiar manipulations were immediately performed to clean the plaque, using alcohol and a rag. Every track has been carefully cleaned. The main thing here is to exercise extreme caution so that the tiny elements of the board that protrude are not damaged in any way. In the end, everything looks like this:

After the map dried up and re-installed on the computer, a real miracle happened - everything worked great. Therefore, for most, at first glance, difficult problems, there are fairly easy solutions.

Summarize

So, in this article, the most popular reasons why a black screen appears when you turn on the computer, as well as the main ways to fix this problem, have been described. If you still have unanswered questions, feel free to ask them in the comments, and we will certainly help you!

I made tea for myself, turned on the computer, set up to work efficiently, but it didn’t work: after a few seconds of loading Windows, a black screen appeared out of nowhere. Just like in a children's horror story. But it’s hardly laughable here, something needs to be done with this, it’s not for nothing that the tea was brewed for so long! Well said - done, because the solution to the problem lies on the surface. Don't believe? And let's check!

Step #1: Starting the System in Safe Mode

The very first thing to start with in case of a black screen after loading Windows is to try starting it in safe mode. To do this, depending on the OS version, you can use various methods. The easiest way, of course, is to turn off the PC and use hotkeys when starting Windows (for example, F8, Del or Shift + F8), and then select one of the options to boot into safe mode:

This method is perfect for XP and Windows 7, but for 8 you may need other methods (). If, after booting, the computer starts normally in safe mode, it is most likely that the situation is a failure of the system settings (registry, drivers, updates, etc.). In this case, you can solve the problem by reading the information described in step 1.1. – 1.7.

However, if none of the methods failed to start Windows in safe mode, you can try to put the computer to sleep (step number 2) or use special boot disks.

Step #1.1: Activating the operating system

In 50% of cases, the cause of a crash in Windows associated with the unexpected appearance of a black screen when loading a computer is the use of an unlicensed copy of the operating system, or rather, its recent update. This happens because, having been updated, the system has not been authenticated and, in fact, gave you away to the Windows developers.

It is easy to verify this: just boot the OS in safe mode. If the problem is related to this, the desktop will display a black screen instead of the usual background image, and at the bottom of the corresponding message about using a non-genuine version of Windows. On XP it will look like this:

How to get rid of the problem? Activate your beloved Windows, no matter what - 7, XP or 8. How to do it? Purchase an activation key or, in extreme cases, grunt it with a special program (for example, RemoveWAT21). The latter option, however, will save you from the black screen for a short time: with the next system update, the problem is likely to recur. Well, maybe you'll get lucky, who knows?

If a black screen appeared after loading Windows precisely because of a failure to update the unlicensed version, by activating it, you can sleep peacefully.

Step #1.2: Reinstalling Graphics Card Drivers

Often a black screen is displayed in Windows versions XP, 7, 8 after loading the computer and when, for some reason, the video card drivers were damaged or simply crashed. In this case, the only the right decision- download and install them on your computer. You can download the drivers from the official website of the manufacturers, and it's completely free.

True, it must be borne in mind that in order to eliminate the black screen during Windows boot, you will need only those video card drivers that are fully suitable for your PC. Note that they differ by manufacturer (NVidia and AMD), OS type (32 or 64 bit), OS edition (Mac, Linux, Windows) and version (eg Windows XP, 8, Vista, 7).

If you don’t know what drivers you need, but Windows XP, 7 still managed to boot (for example, in safe mode), you can press R on the keyboard at the same time and set the dxdiag parameter for the Run utility:

After that, in the window that opens, select the "Screen" tab and read the information about the video card drivers. Using this data, we download the necessary updates, install and configure them on our PC. If the problem was in them, after a new OS boot, the black screen will no longer appear.

Step #1.3: Debugging with a Registry Editor Tweak

At the time of loading Windows 7 and XP, a black screen often appears even if data in the registry is damaged by viruses. It is clear that the solution to this problem must be sought in the restoration of its full-fledged work. How to do it? To get started, launch the task manager with the Ctrl, Esc and Shift keys. After that, open the "Application" tab in it and click the "New Task" button at the bottom of the window:

As a result, Windows will prompt you to create a new task. Enter regedit in the free field and click on the OK button:

As a result, the "Registry Editor" window will appear on the screen. In it you need to find the same branch and file:

After that, double-click on the Shell file, delete all entries in the window that opens, drive the explorer.exe parameter into the empty field and save the settings:

The final touch is to restart the PC. If all the steps were performed correctly and the cause of the black screen after booting a computer with Windows 7 (XP) was registry data corruption, as a result of their debugging, the problem will be solved. If this does not happen, it is very likely that the cause of the problem was not identified correctly, and, accordingly, another solution is required.

Step No. 1.4: Restoring the system using the AVZ program

You can also configure the work of explorer.exe and, accordingly, get rid of the black screen that appeared as a result of a system failure when loading Windows 7 (XP, 8) using the AVZ utility. If the browser does not open on its own and there is nowhere else to download it, we use this solution: we call the R combination and the Run program, enter the iexplore.exe task for it and press Enter (OK):

You can also perform this task through the task manager, if it works. In this case, press Shift, Esc and Ctrl at the same time on the keyboard, select "File" in the window that appears, and in it the item "New Task". Next, in the Create Task utility, enter the iexplore.exe command and click OK:

After Internet Explorer opens, we drive http://z-oleg.com/avz4.zip into the search box, and then download and install the AVZ utility on the PC. In it, open the "File" menu and select "System Restore":

In the new window, mark items 8 and 16 and click the "Run ..." button:

After the program completes the tasks prescribed for it, we send the computer to restart. As a result, with a new boot of Windows, no matter what version it is 7, XP, Vista or 8, the black screen should no longer appear.

Step #1.5: Eliminate the conflict with the antivirus

A black screen at the very beginning of loading Windows 7 / XP / 8 may also appear when there is a conflict between the system and the antivirus, primarily with Avast. In this case, you can deal with such rudeness of an antivirus program that partially blocked system files by deleting the processes associated with the operation of the antivirus in the task manager. Open it by pressing Ctrl, Alt and Esc at the same time:

Note that this is a temporary solution. To finally get rid of the appearance of a black screen at the same time as Windows 7 (8, XP) is loaded, open the antivirus and enter exceptions from step 6 for it. Using Avast as an example, it will look like this:

Then, to start the explorer.exe process, open the task manager and enter this task from the Application tab using the New Task button:

After restarting Windows XP/8/7, black screen issues should be gone.

Step #1.6: Resume System from a Restore Point

This method will be effective in cases where neither the registry, nor the task manager, nor the Run utility on the computer opens. True, you can use it to solve the problem with the appearance of a black screen at the time of system boot only on a PC with OS Windows 7 and 8. However, the process on different versions of the OS will be different:

Hold down the Shift button on the keyboard continuously for several seconds or press it 5 times until the following window appears:

In this window, click the “Go ...” item with the mouse, enter the Ease of Access Center, enter the word “dis” in the search field:

As a result, Windows 7 will open the "Control Panel", in which you need to select the "System" section, and in the next window - the "System Protection" tab:

After that, in the new window we find and click the "Restore" button:

In the "System Restore" window that appears, click on the "Next" button, and then select the appropriate restore point:

As a result, Windows 7 will be rolled back, which will restore the old settings for the system and, accordingly, eliminate the cause of the black screen when the computer starts.

After that, we perform the following actions in turn:

As a result, having chosen a restore point for Windows 8, we will start the process of resuming the old system settings, which will get rid of the black screen popping up again after the system boots.

Step #1.7: Fixing the Issue After Upgrading to Windows 8.1

From the name it is clear that this method should be used if the problem with the black screen appeared immediately after updating Windows 8 to Windows 8.1. First you need to find and delete the hidden folder C:\Windows Activation Technologies on your computer. If the removal failed on the first attempt, we access it using the UnLocker program.

As a result, the program for checking and correcting errors in the Windows system will start. Note that you can use this function not only in Windows 8, but also on 7 and XP:

After that, we start, as indicated in step No. 1.5, the explorer.exe process and restart the computer. As a result, the black screen should no longer appear on a new Windows boot. Note that you can fix the result in Windows 8 by enabling fast system startup:

Step #2: Use sleep mode

Let's say right away that if starting the computer in safe mode did not work, you should not really hope that the sleep mode will help. However, what the hell is not joking. How to put Windows to sleep? If you are working on a laptop / netbook and the power button is set to boot the system in sleep mode, press it.

If there is no such function or you are used to working with a stationary PC, you will have to tinker a bit. Quite a bit:

Press the button on the keyboard and thus open the "Start" menu. In it, click "Shutdown", then press Shift and select "Sleep":

We enter the "Start", open the "Shut down" menu and select "Sleep" in it:

Windows 8:

We go into "Settings", press Shift and at the same time select "Shutdown" on the screen. In the menu that opens, click "Sleep":

After the system sleeps for a few minutes, restart the computer. If the black screen disappeared, then the problem was solved by itself. What to do if the problem persists? Try again to start safe mode, what if it works?

What if the miracle did not happen, and none of the methods described above helped? In this case, it remains only to restore Windows using an installation disk or image, or, in principle, reinstall operating system. But that, as they say, is a completely different story.

PC users are sometimes taken by surprise by an unpleasant situation when the computer does not start after turning on, but looks at the user indifferently black screen with text or blinking cursor. Why did this happen and what should we do now?

If, turning on the computer, you suddenly did not see the familiar Windows 7 splash screen (XP, 8,9,10), but only black screen without signs of life - do not panic and do not rush to reinstall Windows! It is possible that you can handle the problem on your own.

Let's take it step by step possible options happened.

1. Consider situations when, when you press the power button on the computer, it refuses to work and starts loading Windows. Perhaps there is a very simple explanation for this - this is the lack of electricity supply.

What to do to check it

2. If, when you turn on the computer, you hear the rustling of the startup hard drive, but the display remains black, then you need to find out exactly where the problem happened and what specifically does not work.

How to check it?

• Carefully disconnect the monitor cable from the system unit. If the message “No signal” appears on the screen, this means that the monitor itself is in order, and the problem is somewhere else.
• If, after turning on the computer, you saw a burning indicator for turning on the monitor, but the image itself is missing - try bringing the flashlight close and shine it - the image may be, but very faintly distinguishable. If you see it, it indicates a malfunction of the backlight lamps or the monitor's inverter. This problem can only be fixed experienced master at the service center.

3. If you have completed all the above steps, investigating the causes of possible mechanical external inconsistencies, but still have not established the cause of the occurrence black screen, it is possible that the problem lies within the system hardware.

How to check what happened

4. If you have done all the above steps, but when you turn on the computer, it still refuses to work and load Windows, demonstrating black screen with a flickering cursor on it, and maybe some text. This means that the failure occurred somewhere in the software.

What to do in this case

In conclusion, I want to reveal simple secrets how to prevent yourself from getting a black screen:

• correctly shut down the computer, this will save it from malfunctions and allow the system to boot without errors;
• regularly run defragmentation of the hard disk and check it for errors;
• install an antivirus program and make sure that it scans your computer daily for malware;
• if possible, try to prevent overheating of the computer elements, if necessary, take care of an additional fan;
• regularly clean the system from dust, this will ensure reliable contact of the connections.

I hope that thanks to this article you were able to find the answer to the question: “what should I do if, when turned on, the computer refuses to work and I don’t see the usual Windows boot?”

Sometimes, turning on the PC, you may encounter such a situation that you will see a black screen instead of the OS startup process. Most often, this problem can be fixed by yourself without resorting to. In this detailed instructions we will show what to do if there is a black screen when you turn on the computer, what actions can be taken to restore the normal operation of the computer.

Causes of the black screen

This problem can be caused by:

1. Software damage to the system;
2. As a result of failures / failure of PC components;
3. If you accidentally deleted the files needed to start Windows;
4. The computer is infected with a virus;
5. Also, one of the most common options for the cause of the problem is the incorrect shutdown of the computer due to power outages or failure of the uninterruptible power supply.

Bad contact

If your PC turns on normally, and you hear one short beep, this means that the check of computer components was fine, but if there is no image on the screen, then you need to check the monitor cable.

See if it is securely connected to the PC and to the outlet.

If the system gives a constant beeping signal, this means that your video adapter, RAM, processor, or the motherboard itself is faulty. In this case, you will need to disassemble the computer and check all the contacts that you can find. It still doesn’t hurt to clean the insides of the system unit from dust, which can also sometimes cause problems with the normal operation of the computer. The appearance of a black screen may be due to a dead CMOS battery on the motherboard, you will have to check and replace it. It is removed by pressing a screwdriver on the lock on the side.
If your computer displays the following message at boot time:

No bootable device insert boot disk and press any key

BOOTMGR is missing Press Ctrl+Alt+Del to restart

This means that he did not find your HDD, perhaps it is damaged or there is a problem in the contact of its plugs. Such errors can be caused by software corruption of the boot sector, and in order to fix them, you will need to use from which you can run the system recovery program.

Software failures

If the black screen is caused by incorrect Windows settings or third-party programs, you can start the computer using safe mode. This will require:

There are several types of modes:

1. "Safe mode" - by loading the system in this way, it will be launched in a minimal configuration, without the possibility of using the Internet.
2. "Loading Network Drivers" - all the same, but with Internet access.
3. "With the support command line» - having loaded using this item, it will be possible to use various commands to configure and eliminate .

Safe mode is very useful feature By starting the computer in this way, you will gain access to the system and be able to prevent Windows from starting normally, as well as change system settings and check the registry for errors.
In addition, of course, it does not hurt to scan the system for viruses using the appropriate ones.
After completing the required operations, restart your computer in normal mode.

Disappearing Desktop

If you have fixed all the problems and the computer starts to boot normally, there may be a situation where icons do not appear on the desktop and there is no menu "Start" . To fix this, you need to do the following:

After that, you should have a desktop with application icons.

HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/WindowsNT/CurrentVersion/Winlogon

Look for the parameter with the name Shell . It must be set to: explorer.exe
You will need to edit it if anything else is written there. You can change a parameter simply by double-clicking on it.

That's all, this manual discusses the causes of the black screen and the main ways to fix this problem. We wish you good luck in restoring the normal operation of your PC.

Let's talk about a problem that every computer user has encountered at least once in their life. So, you are faced with a situation where one day a black screen appears when you turn on your computer. Whether it's Windows 7 or XP, it doesn't matter. Perhaps, at the same time, unpleasant squeaks are also heard from the system unit. It is immediately worth noting that the reasons why this trouble occurred may be a large number of. Therefore, if you tried some method, but the problem was not solved, feel free to move on to the next one. As a last resort, if all your efforts have not brought results, and when you turn on the computer, the black screen remains, take your equipment to the service, they will definitely sort it out.

A problem you can't fix yourself

If your computer starts up, you hear a signal that the machine completed the self-test without problems, but the screen remains black, then this indicates to us that the video signal generation and processing board in the monitor has failed. In this case, it will not be possible to do without qualified service assistance, unless you have a necessary equipment and you personally have special skills and knowledge.

Correctable situations

When you turn on the computer, a black screen, but there are no sounds? We start with banal things. We check whether the computer has really turned on, whether there is power in the outlet, whether the surge protector is working, and so on. Very often, no one pays attention to this, and users needlessly sound the alarm, thinking that something serious has happened to the computer.

moving on

When you have reviewed everything and came to the conclusion that this is not the reason, but when you turn on the computer, the black screen still remains, we proceed to the following recommendations. Check if the system unit is connected to the monitor. Pay special attention to this item if you see the power indicator on the display from time to time. The DiViAy or VGA cable is most likely damaged or not connected, for example, due to a loose fit to the contact groups, and, as a result, the signal simply does not reach where it is needed.

Drivers and motherboard

So, you followed all the instructions above, but you still get a black screen when you turn on your computer? With or without a cursor, it doesn't matter. Checking now software, namely the driver. Perhaps the latter simply flew off, and the computer cannot display the screen resolution you selected earlier. You should also check the battery that is in the motherboard. She may be sitting down.

RAM

Another reason why you see a black screen when you turn on the computer may be poor contact of the RAM modules in the slots. Therefore, we open the system unit and remove them from the slots. Carefully inspect all contacts. If they are dirty or oxidized, take an ordinary eraser and clean it, then return it to its place. It will also not be superfluous to replace them with each other or install them in free places on the motherboard. If this does not work, then you will have to contact the master.