The computer turns on and the monitor is black. Black screen when loading Windows. Fighting viruses and other malware

Currently, a considerable number of Windows 7 users have encountered a new misfortune. This convenient operating system, capable of automatic updates, is quickly gaining popularity. But so far it’s really not as smooth as we would like. And such a problem as 7 is becoming more and more common. Often the problem begins to appear after one of automatic updates. Although this version of events is unofficial, there is still a certain assumption on Microsoft's part.

However, Microsoft themselves persistently deny this fact and are still conducting research and are in no hurry to issue conclusions. And, most importantly, somehow help users resolve the problem. However, the security flaw allows malware to make changes to the system. Or rather, into the holy of holies, the register. After such an intervention, the same infamous problem arises. booting Windows 7.

The reason that causes Windows startup 7 black screen

Independent experts have already conducted their own examination. During its course, it turned out that the main problem lies in some of the features of storing registry data that have new system. The vulnerability relates to the Shell value. With some changes, it is not processed correctly, which ultimately causes the scary black screen when loading Windows 7. Wallpaper, taskbar, sidebars - nothing loads. In rare cases, you can only see the Explorer window, and only if it is not minimized. Otherwise, the latter will also disappear into obscurity.

Solution

How to fix the black screen when loading Windows 7? There are several ways to solve this unpleasant problem. Unfortunately, most of them turned out to be ineffective. The most popular option, which has successfully proven itself and has helped more than a dozen users, is as follows. A combination of three keys (Shift + Ctrl + Esc) should be called. It selects the command to execute a new task (file -> execute). After these steps, a window should open in which you need to enter the regedit command.

This command calls and allows you to view We will need the branch HKEY_LOCAL_MACHINE->SOFTWARE->Microsoft->WindowsNT->CurrentVersion->Winlogon. Its contents will appear on the right, where all you have to do is find the notorious Shell key and double-click on it with the left mouse button. Everything that should be in the window that opens after this is contained in a single value “explorer.exe”. Perhaps there will be meanings with other names. All of them can (and even need) to be removed.

If no extra values ​​are found, the Shell key itself must be deleted and recreated. This is not difficult to do. In the area where the key was located, you need to right-click and open the corresponding menu. There will be a “create” option. We need to create a string parameter with a name similar to the remote key (Shell).

Black screen when loading Windows xp

This phenomenon is also not uncommon. The black screen here may occur after installing the third Windows update package (Service Pack 3). Or the first one, which they are trying to install on top of Service Pack 2. Incompatibility of some system elements causes similar problems when loading. Appearance The downloaded image is the same as in the case of problems on Windows 7: a completely black screen without any icons, launcher or background. All that remains is the Explorer icon.

The most common reason for a blank black screen to appear is the presence of dangerous viruses. Elimination in this case is associated with ridding the computer of this scourge. The solution uses a small Prevx patch, which takes up only about 50 KB. The convenience lies in the fact that when launched, the program itself performs all the necessary actions. Sometimes the boot disk helps.

Another good utility is called Malwarebytes’ Anti-Malware. It is suitable for owners of any operating system Windows and scan their system for viruses. After all, even the best and most reliable antivirus program does not guarantee 100% protection. Therefore, it doesn’t hurt to check the contents of your computer with a specialized utility to detect Trojan viruses.

A black screen when booting a computer or laptop indicates serious problems with the software or hardware. In this case, the fan on the processor cooling system may rotate and the indicator will light up. boot hard disk. A significant amount of time and nervous energy is usually spent on solving such problems. In this article we will talk about the causes of the failure and how to eliminate them.

There are several types of black screens and they all appear under different circumstances. Below is a list with explanations:

Option 1: Blank screen with cursor

As mentioned above, such a screen informs us that the GUI of the operating system is not loading. The Explorer.exe file is responsible for this ( "Conductor"). Startup error "Conductor" may arise due to its blocking by viruses or antiviruses (in pirated copies of Windows this is quite possible - there have been cases), as well as due to banal damage by the same malware, by user hands or incorrect update.

In this situation, you can do the following:

Option 2: Boot disk

This error occurs due to a software failure or a malfunction of the media itself or the port to which it is connected. This can also happen due to a violation of the boot order in the BIOS, damage to boot files or sectors. All these factors lead to the fact that the system HDD it simply doesn't work.
The following steps will help solve the problem:

• System recovery with a preliminary attempt to boot into "Safe Mode". This method is suitable in case of failure of drivers and other programs.
• Checking the list of devices in the BIOS and their boot order. Some user actions can disrupt the media queue and even remove the desired disk from the list.
• Checking the functionality of the hard drive on which the loaded operating system is located.

The information provided in the article above is suitable not only for Windows XP, but also for other versions of the OS.

Option 3: Recovery Screen

This screen appears when the system cannot boot on its own. The reason for this may be a crash, an unexpected power outage, or incorrect actions to update, restore, or change system files responsible for loading. It could also be a virus attack targeting these files. In a word, these problems are of a software nature.

First of all, try to boot the system in normal mode - there is such an item in the menu. If Windows does not start, then you will need to perform a number of actions, in order:

1. Try to run the last known known configuration, if possible.

   

2. If it doesn't work, then it's worth trying "Safe mode", some programs, drivers or antivirus may be preventing the download. If the download was successful (or not so successful), then you need to perform a “rollback” or restore (see below).

   

3. To launch the recovery environment, you need to select the appropriate menu item. If it is not there, you need to restart the computer and press the key the next time you boot F8. If after this the item does not appear, then only installation disk or a USB flash drive with Windows.

   

4. When booting from installation media, at startup you must select the mode "System Restore".

   

5. The program will scan the disks for installed operating systems and may suggest changes to the boot parameters. If this happens, you need to press the button "Fix and restart".

   

6. If you are not prompted to automatically correct errors, you need to select the system in the list (most often there will be only one) and click “ Further".

   

7. You can try selecting the first item in the console - "Startup Recovery" and wait for the results, but in most cases it doesn’t work (but it’s worth a try).

   

8. The second point is what we need. This function is responsible for searching for restore points and rolling back the OS to previous states.

   

9. The recovery utility will launch, in which you need to click "Further".

   

10. Here you need to determine after what actions the download failed. After that, select the appropriate restore point and click again "Further". Don't forget to check the box next to the item "Show other restore points"- this can give additional scope for choice.

    

    Conclusion

    Thus, we have examined several options for the occurrence of a black screen when loading the operating system. The success of restoring functionality in all cases depends on the severity of the problem and preventive actions, such as backups and restore points. Don’t forget about the possibility of a virus attack, and also remember about ways to protect yourself from this kind of trouble.

There is a very common problem among PC owners - you turn on the computer and see Black screen on boot.

What are the reasons for such a failure and what to do in this situation is the main topic of this article.

Problems that occur when loading the system

The problem has a wide range of factors that provoke it.

Additionally, the black screen may also appear in different ways, such as with or without a cursor.

Let's take a closer look at the main causes of failure:

Boot Windows in Safe Mode

Initially, you should try to boot the system securely.

Disconnect from your computer external devices, as well as flash media, which could also be the cause of the conflict.

Turn off your computer to stop any processes causing the black screen.

Then launch it again, at the very beginning of which be sure to press the F8 button on the keyboard (Delete, Shift + F8 - depending on the installed operating system).

In the window additional parameters download, select the required option.

In this case - Safe Mode.

If this is the case, then after downloading you will see a warning on the screen that you are using an unofficial version that must be licensed.

To get rid of the problem - the operating system.

Equipment malfunctions

Monitor and system unit

The cause of a black screen may be the presence problems with equipment.

For example, due to poor contact with the system unit, when it does not receive a signal from.

Lack of normal contact between the monitor's network cable and the outlet

In this case, check the quality of all connections and the presence of external damage to the screen, due to which the image may be missing.

If such a problem occurs on a laptop, then the reason is almost always unrelated, since in order to damage it, it must be subject to a strong mechanical impact, for example, a fall or impact.

In this case, the deformation of the monitor will be visible to the naked eye: areas with dead pixels, scratches, etc. will be visible.

On a computer, a black screen when logging in can cause a breakdown of one of the components system unit, so it will need to be studied in detail.

First of all, attention should be paid to the video card, namely the reliability and tightness of its fastening in the slot, as well as the stability of the supplied voltage and cooling (if it is not passive).

Checking the functionality of video card drivers

To get rid of this, you need to restore it to fully working condition.

To do this, open « Task Manager» by using Ctrl +Shift +Esc.

In the window that appears, go to the tab. Here you will need to create a new task by clicking on the button of the same name and entering the value in the special field

Although quite often users disable this function, considering it almost useless.

But with its help, sometimes it is quite possible to avoid Windows reinstallation, returning to the point of maximum stable operation.

It is quite possible to perform this operation after loading into safe mode.

Conflict with antivirus software

The inability to start often provokes a conflict between the OS and the installed one.

The latter sometimes mistakenly blocks various system .

To return your computer to normal operating condition, you will need to terminate some antivirus processes.

Using the button combination C trl +Shift +Esc Open the task manager window and selecting the " Processes» those related to the antivirus - complete them.

Remember that this is a temporary measure and they will be launched again with the next system start. To avoid recurrence, you should create certain exceptions for your antivirus application.

If you use the program, it will look like this.

Go to the program settings window and select active protection.

Then go to the screen tab file system and select a section in it "Settings" .

On the left side of this section, find the item "Exceptions" and click on it.

Add the following values ​​to the input field - "C:\Windows\explorer.exe" and "C:\Windows\immersiveControlPanel\systemSettings.exe". Then click on the OK button.

In order to start the explorer.exe process, you need to use the menu "Run" and enter the name of the process in a special window.

After clicking OK, you need to restart the computer.

Virus scanning and removal

Malware is a culprit of failure like no other.

Therefore, it is necessary to check not only the partition with the system, but also the entire hard drive to identify them.

Can different ways carry out such a check.

One of them would be to use the utility 4MRecover, which is present on boot disk LiveCD4MRescueKit.

Another option is to check on another computer that has good anti-virus protection.

True, this is not very convenient, since you will have to remove the cover of the system unit and disconnect the disk itself.

Black screen appears during Windows reinstallation

In this case, there are several possible solutions:

1 Use another media with the image for installation, or write a different version of the OS onto it

2 Check the Windows volume for bad sectors, as they may interfere with the installation process.

The flash drive or disk should be checked for other types of damage. For example, mechanical;

3 It’s worth trying to choose another local disk as a system one.

Fighting viruses and other malware

Fraudulent software is quite developed and harms not only user data, but also important system utilities.

In this case, the cursor also appears occasionally, and besides, it is even controllable.

A virus attack may not be confirmed, but it’s still worth a try.

Nowadays, in the antivirus market software components a lot, but it would be best to use the laboratory’s development Dr. Web entitled CureIt.

With its help, the user is provided with the function of superficial analysis of files on, and more detailed check, this is what the utility’s start menu looks like:

Sometimes, when starting a computer, the user is greeted with an unpleasant surprise in the form of a black screen. This device behavior occurs caused by:

• pirated software;
• malware;
• incorrect operation of the discrete video card driver;
• unfinished installation of updates;
• damage to system unit components.

Such a malfunction can occur due to a number of reasons, so finding it is the key to solving the problem.

Starting Safe Mode

To restore correct operation, you will need to start safe mode. You will have to act by touch, which means you need to be careful. After several key presses Backspace or F8 you need to click on the button 5 times tabs and then press Enter. Next press again Up, after which again Enter, while holding Shift. These actions will lead to the mode opening recovery. The screen will still remain black, so you won't be able to verify this with your own eyes. Here you need to make the appropriate settings:

• three button transitions Down, further Enter;
• two button transitions Down, again Enter;
• then you need to press the key twice Left;
• after that, another transition with the button Down And Enter.

If the display display worked correctly, you would see the following picture:

After the above manipulations, the OS will start with the settings marked with arrows in the image. Low resolution may help to see the image.

Trouble-shooting

Windows is not activated

This situation is often encountered by users who have a machine with unlicensed software installed.

To avoid having to deal with annoying notifications and the resulting inconveniences, you need to get rid of from the corresponding utility. She included in the package one of the updates. To do this you will need a separate software solution, such as RemoveWAT.

After downloads And launch Just press one button and the problem will be solved.

The computer is infected with a virus

The malware changes the configurations of deep Windows settings, the result of which is changing the appearance of the interface. If no changes have occurred after removing the malicious program, this does not mean that the destruction of the virus was unsuccessful. The issue may be that the settings were not set before the initial version.

To troubleshoot necessary:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

There are two options here, Shell And Userinit, whose default values explorer.exe And c:\windows\system32\userinit.exe respectively. If this is not true it is necessary reinstall parameters and restart system for them to take effect.

It's also worth checking out the thread HKEY_CURRENT_USER\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\Winlogon, where such variables should not be located. Otherwise, they are subject to destruction.

Non-working video card drivers

They must be removed and new ones must be installed in their place. For this necessary:

However, this method is unsafe because some components may remain in the system even after removal, which can lead to conflicts during subsequent updates. Therefore, a more competent approach would be to use specialized utility Display Driver Uninstaller, which is publicly available.

The final stage is from the official website of the manufacturer and its subsequent installation.

Black desktop without shortcuts

Microsoft is working on optimization software and updates it regularly. During the installation process, the system asks the user not to turn off the computer, but there is not always time or opportunity to do just that.

Terminating updates may result in a black screen upon subsequent boot. This process sometimes it lasts up to 30 minutes, which is due to large updates or low hardware performance. When the process is completed, the computer will work properly again.

Computer problems

The first step is to turn off the device. After that it's worth inspect wires and make sure they are not damaged. You also need to check the cables, as well as their interfaces, for mechanical damage.

The motherboard must also be in integrity and safety. But even in this case, it can cause a black screen due to a large accumulation of dust.

The board also has batteryCMOS, which is responsible for the safety of BIOS settings. It may run out of power, preventing the system from booting. In this case, replacing it will solve the problem of the black screen. But most often the solution lies in operating system malfunctions.

If all else fails

There is a procedure for rolling back the OS to the latest working update. To save all files, you need to go to " Control Panel» → « System» → « System protection"and in the protection settings enable all logical drives. Otherwise, during subsequent recovery, only the system disk will be restored.

This is where it happens recovery by pressing the appropriate button.

You need to immediately clarify what “after loading” means. You should not think that this applies to the case when the user turns on the computer, but it does not react to this in any way and the monitor screen remains black, as before turning on the PC. “After loading” means that the user sees on the monitor screen the results of the so-called post (power on self tests), BIOS messages about the computer configuration, the initial Windows 7 welcome screen. But then the usual desktop is displayed (or may not be displayed) in black, and sometimes with some details in the lower right corner. Why doesn't Windows start in its normal mode?

Reasons for a black screen

Let's list the most common reasons occurrence of a black screen (in order of increasing difficulty in eliminating them):

• Short-term hardware faults, such as power outages.
• Problems with the video card, such as a damaged video driver file.
• Virus attack attempting to damage system files and/or the Windows registry.
• Attempts to update a pirated copy of Windows 7.
• Problems with OS activation.

The simplest reason is a short-term loss of power in the electrical network, which can be checked by trying again to turn on the computer and boot Windows 7. If this was the reason for the black screen, then when you start Windows again, the black screen will disappear and everything will work as it should. Otherwise, the user will have to work a little harder.

In any case, the absence of a normal desktop means that Explorer (explorer.exe) was not launched for one of the reasons given above. First, let's assume that for some reason the explorer does not start, and we will try to start it. For this:

1. Use the Ctrl+Alt+Delete or Alt+Ctrl+Shift buttons to open the task manager.
2. In its window, open the “Applications” tab.
3. Click on “Create a new task”.
4. In the window with this name, set explorer and click “OK”.

Now you need to restore the normal launch of Explorer so as not to perform the described steps every time you start Windows.

In order to avoid the difficulties of editing the system registry, we will use the AVZ utility. We launch it and open the “File” item in the main menu, then click on “System Restore”. A window opens with a list of recovery actions. In it, check the items “Restore Explorer settings” and “Restore Explorer launch key”, then click “Perform selected operations”.

Finishing AVZ works We reboot, after which the explorer starts normally.

Problems with the video system

Typically, a black screen occurs for two reasons - due to overheating of the video chip or distortion (substitution) of the video card driver file by some malicious application. The first of them is easy to determine if you find out the temperature of the video chip using one of the many computer health monitoring utilities, for example, AIDA64. As a rule, the video chip overheats when the fan blowing on it stops or when it is overloaded with modern “heavy” games. For most video cards, the maximum temperature limit for the video processor is 100 degrees Celsius. If a black screen appears when the PC is running due to overheating of the video processor, then repeated attempts to boot will lead to nothing - you should wait a while for its temperature to drop, then try to boot again.

Black screen as a result of a virus attack

Problems with the video card driver, as a rule, arise either due to the impact of viruses on the video driver file or after an unsuccessful attempt to update it and the resulting incompatibility of the new video driver with the OS version. In any of these cases, you should boot Windows into safe mode. To do this, after turning on the computer, you need to press F8 until additional options boot and select safe mode. If after booting in this mode the black screen disappears, then most likely you need to reinstall the video card driver. Of course, reinstalling the video driver is only possible when Windows starts, and other than a black screen, there are no other problems. To reinstall the driver, you need to go to the website of the video card manufacturer, download the most latest version driver and install it. You can also update the driver in another way. You need to go to the device manager, select the desired video adapter in it, right-click on it (RMB) and select “Update drivers” from the menu.

But we cannot turn a blind eye to the possible consequences of exposure to viruses. In this case, restoring system files and rolling back to the last working system configuration can help.

Recovering system files

To do this, use the sfc system utility. It is launched in a command mode window as an administrator by typing the command sfc /scannow. This utility will check system files for corruption and, if necessary, restore them. Sometimes it may ask you to install a disk with a Windows 7 distribution, but usually this does not happen, and the files are restored from their copies on the hard drive.

Last Known Good Configuration

This feature is available in the Advanced Boot Options menu, which you can access by holding down the F8 key immediately after turning on the computer.

It is possible that restoring a successful configuration will not help, since it may also be corrupted by a virus attack. It remains to apply the following recovery option.

Rollback to one of the previously created restore points

This can restore the contents of system files and the registry and get rid of their corruption and deletion as a result of viruses. To perform such a recovery, the following steps are required.

We boot into safe mode, call up the control panel, in which we select the “System” item. A window appears, on the left side of which select “System protection”. After this, we are presented with a window that looks like:

If the system partition hard drive If “Enabled” is not indicated in the “Protection” column, then there is no point in continuing further, since there are no rollback points due to the fact that the user did not bother about it. However, let’s assume the opposite - the user has shown concern for the “health” of his PC and the system disk protection is installed. Then you can click on “Restore” and get a window asking you to select one of the rollback points:

This photo shows a point automatically created by the system during installation Avast antivirus. If you check the “Show other restore points” checkbox, you can select earlier rollback points. You should choose the point at which the system was as stable as possible. Having set the rollback point, click “Next”, after which the system recovery process starts, which ends with a reboot. You can be sure that there will be no problem with a black screen when booting the system.

Problems with activating and updating a pirated copy of Windows 7

These two points of the reasons for the appearance of a black screen are closely related, so the author of the article combined them into one point.

It will not be a big secret to say that many users install unlicensed versions Windows 7. Therefore, they may periodically experience a black screen after installing system updates distributed by Microsoft. Authentication occurs with every update installed system, and in the case of a “pirate”, when the system boots, the user receives a black screen, in the lower right corner of which there is an inscription stating that a fake copy of the operating system has been installed, which has not passed authentication. Moreover, some curious but inexperienced users try to verify its authenticity with their own hands, and as a reward for their curiosity they receive a black screen. Why, because he knows that this is a pirated version.

In this case, you can get rid of the black screen by following these steps. You need to go to the “Center” through the control panel Windows updates,” in which you need to click “View update log”, and in it “Installed updates”. In the window that opens, the user will see everything installed updates, among which you need to find KB971033, delete it and reboot.

To prevent this from happening again, this update should be disabled altogether. To do this, in the Update Center, select “Search for updates” and search for this ill-fated update. Then you need to right-click on it and select “Hide update” from the menu. In addition, you need to remove the check mark in the small window next to the update name, then click “OK”.

Well, in order to finally “discourage” the system from checking authenticity with each update, it is recommended to edit system file hosts, which is located on the system partition in the Windows/System32/drivers/etc directory, placing the line 127.0.0.1 validation.sls.microsoft.com.