Do you know what to do to repair a computer that cannot start? When the power switch button is aging and the power switch button cannot be reset in time after being pressed, the switch is always on. Let’s take a look at the computer that cannot start. How to fix it, welcome to check it out!

Effective solutions for repairing problems that cannot be booted

First, we click the "Advanced Options" button, then enter "Troubleshooting", enter "Advanced Options", enter "Command Prompt", enter "bcdboot c: windows /l zh-cn" in the command prompt, then press Enter to confirm, it will automatically restart. Note that "l" is a letter (capital L), not the number 1 .

However, after restarting, you still cannot enter the system. Instead, you are prompted to restore. Your computer/device needs to be repaired. The operating system cannot be loaded because the digital signature of the file cannot be verified. File: WindowsSystem32DriversDMProtectEx64.sys. Error code: 0xc000048, as shown in the figure below.

We press the "F1" key to enter the recovery environment.

Press F1 to enter and select the Microsoft keyboard to enter the command line interface. We need to delete the DMProtectEx64.sys file prompted in the above picture.

In the command line interface, enter: "del c: WindowsSystem32driversDMProtectEx64.sys". After pressing the Enter key to confirm, there will be no prompt. We then enter "exit", pressing the Enter key to confirm, and click to continue using it. Restarting windows can solve the problem.

The error file and error code prompted by each person may be different. If your prompt is the bootsafe64_ev.sys file, the method is the same. Enter "del c:windowssystem32driversootsafe64_ev.sys" in the command line interface. Remember to require full path.

What should I do if it cannot be automatically repaired after booting up?

We know that reinstalling the system can solve 100 problems on the system, but we cannot say that we should reinstall the system every time we encounter problems. After all, we need to install the software again, trouble! Just like a problem that cannot be repaired automatically, we can also try several methods to solve it. If it doesn't work, it's not too late to redo the system.

Solution:

Method 1: Reset this computer

1. After a personal test, the solution is solved. Jump to the following interface, and we click "Advanced Options". As shown below.

Automatic repair Your computer did not start correctly

2. We click on the "Troubleshoot" option.

3. Click the "Reset this PC" button.

4. There are two options, one is to keep my files, and the other is to delete all the contents. I recommend keeping my files.

5. There may be a situation where you need to select an account. We choose the login user account name.

6. We enter the password of the account name and click Continue.

7. We click the "Local Reinstall" button.

Note: There is also a "cloud download" function above, which has not been tested. You should download the system image and restart the system. If local reinstallation does not work, you can try the "cloud download" function. Reinstall Windows.

8. The reset will begin at this time. Wait all the way until you enter the system desktop. Mine successfully solved this problem. Personal test.

After resetting, some software may need to be reinstalled. If the software cannot be used, just reinstall it.

Method 2:

First, we click the "Advanced Options" button, then enter "Troubleshooting", enter "Advanced Options", enter "Command Prompt", in the command prompt Enter "bcdboot c:\windows /l zh-cn", then press Enter to confirm, and it will automatically restart. Note that "l" is a letter (capital L), not the number 1.

However, after restarting, you still cannot enter the system. Instead, you are prompted to restore. Your computer/device needs to be repaired. The operating system cannot be loaded because the digital signature of the file cannot be verified. File: Windows\System32\ Drivers\DMProtectEx64.sys, error code: 0xc000048, as shown in the figure below.

We press the "F1" key to enter the recovery environment.

Press F1 to enter and select the Microsoft keyboard to enter the command line interface. We need to delete the DMProtectEx64.sys file prompted in the above picture.

In the command line interface, enter: "del c:\Windows\System32\drivers\DMProtectEx64.sys". After pressing the Enter key, there will be no prompt. We then enter "exit" and return. Press the car button to confirm, click Continue to use Windows and restart.

The error file and error code prompted by each person may be different. If your prompt is the bootsafe64_ev.sys file, the method is the same. Enter "del c:\windows\system32\drivers\bootsafe64_ev" in the command line interface. .sys", remember to need the full path.

What should I do if the computer starts up and displays startup repair?

Win10 repair interface

The reason why the computer enters the startup repair screen as soon as it is turned on is because it was not shut down properly last time. The hard disk file is damaged and the system is currently undergoing detection and repair.

Solution:

1. The only thing that computer users need to do is: wait patiently for it to complete, and it will automatically restart after completion. If you cannot enter the system after restarting, you need to reinstall the system.

2. If you need to enter the system urgently, you can also press the ESC key to skip the automatic repair and enter the system directly when the automatic repair screen appears. However, automatic repair will still be required when you turn on the computer next time, and it is often skipped. Automatic repair can easily cause hard drive damage.

3. If this screen appears frequently, the hard disk may have many fragments or bad sectors. You need to use the system U disk or CD to start the computer, and then use special tools such as DISKGEN to detect and repair the hard disk. If the repair doesn't work, the hard drive will need to be replaced.

4. It is recommended that you keep clicking the F8 button when booting (or restarting) to enter the last known correct configuration;

5. If it does not work, it is recommended that you back up your data. Restore or install the original operating system.

According to personal experience, if you cannot enter the system currently, you need to back up the data in the hard disk. There are generally two methods:

1) Take out the laptop hard drive and use a mobile hard drive box or cable to connect it to other computers for data backup;

2) Use Win System maintenance tools such as PE can be booted from the CD. In the Win PE system, you can access the original hard disk partition, and then connect the U disk or mobile hard disk to copy the data.

You can refer to these methods. If the data cannot be retrieved, it is recommended that you try to contact a professional data recovery company for consultation.

Is the startup repair related to your improper operations before shutting down, such as playing games, watching videos, operating large things, using the computer for a long time? Or installing inappropriate things. , the fault will not happen for no reason, right?

1) Press F8 immediately after booting until the advanced options appear, then let go, select "Last Known Good Configuration" and press Enter to repair. If it still doesn't work, press F8 to enter security. Restore the system or reinstall the system (if reinstalling is also a repair, it is recommended to perform maintenance. If you can enter safe mode, it means you have installed inappropriate things. Uninstall all inappropriate things downloaded before the accident, or restore the system. or reinstall). First soft and then hard. Such problems are caused by software conflicts, inappropriate drivers, and system problems. You can restore the system in safe mode. If it still doesn't work, reinstall the operating system. Do not install software, patches, drivers, etc., and see if it works after booting. Is there a problem? If you are not installing drivers, patches, and software step by step, don't install anything that is inappropriate.

2) If this is always the case, reinstall the operating system first with software and then with hardware. Do not install software, patches, drivers, etc. and see if there are still problems with booting? If you have not installed drivers and patches step by step , software, if you find anything inappropriate, don’t install it (please ask me if you have any questions). Please note: If you install drivers, patches, software, etc. after restoring the system or reinstalling, be sure not to install the things that affected your accident, otherwise the restoration or reinstallation will be in vain.

3) Check whether there are any problems with hardware, such as hard disk, memory, graphics card, motherboard components, etc. If it is caused by hardware problems, it is recommended to have them checked.

You can also repair it by entering the system

Under the system, enter msconfig in the run and press Enter. You can see that there are normal startup, diagnostic startup, selective startup, different selections, and startup methods. It's also different. You can start your computer three times and try it three times to find out.

It is best to let it automatically detect when booting, which can reduce bad sectors to a certain extent.

The computer enters the startup repair screen as soon as it is turned on. This is because the hard disk file was damaged due to improper shutdown last time, and the system is now undergoing detection and repair.

After starting the computer, change the startup item to normal startup, and the diagnostic startup will appear

Or run CMD and then run, CHKDSK E: /F

Various If the repair doesn't work, you can only repartition, format the drive letter, and reinstall the system, drivers and software.

Do you know what to do if the computer cannot enter the system when it is turned on? The computer enters the startup repair screen as soon as it is turned on. This is because the hard disk file was damaged due to improper shutdown last time, and the system is now undergoing detection and repair. Let’s take a look at what to do if the computer cannot start the system, welcome to check it out!

What to do if the computer cannot start the system

Reason 1: System failure

Solution

1. While shutting down the computer and then restarting it, hold down the F8 key on the keyboard to enter the Advanced Startup Options. After entering the Advanced Startup Options, select Perform Final System Restore from your Advanced Startup Options. Try to restore the current system. Generally, this kind of system recovery is suitable for newly purchased notebooks that have a pre-installed recovery partition.

2. Reinstall the system. Find another computer, use your USB flash drive to make a boot disk, and then download a system image from the Internet to make preparations. When ready, you can install the system.

To make a boot disk, you can refer to this tutorial: U disk production tutorial for system maintenance

After the production is completed, you can refer to this tutorial to start and reinstall the U disk: U disk system win7 picture and text Tutorial

Reason 2: The bios is not set properly. In other words, your computer's bios settings did not set the hard disk as the first startup item.

Solution

1. Press f2 to enter bios when booting, then enter the boot menu and set your hard disk as the first startup item.

In this case, it may be a hardware problem. You can clean the computer host and then turn it on again.

What should I do if the computer cannot start normally?

Restart: Sometimes the computer system cannot be started after it is turned on. It is just an accidental phenomenon. It may not be fully started at the time of startup or some components may not be loaded. This causes a blue screen, in which case you only need to restart the computer.

Enter the last correct configuration: When our computer enters the operating system interface, press F8, we can enter the advanced option mode, we select the last correct configuration, and then click OK. If the problem is not resolved If it's big it should solve the problem.

If the above method does not solve the problem, we can enter the safe mode to repair it. After entering the safe mode, we must first disinfect the computer to see if a virus is causing trouble, and then run the fault repair. See if some programs are wrong.

Poor contact of the memory stick or memory damage causes computer blue screen: The most common computer blue screen phenomenon encountered in actual work is poor contact of the memory stick (mainly caused by too much dust inside the computer, which often occurs in old computers) And computer blue screen is mostly caused by hard disk failure. Of course, when a computer memory module fails, a computer blue screen will also occur.

Solution: Since most blue screen failures are caused by memory, they are caused by excessive internal dust or poor contact, so the solution is very simple. You only need to open the computer case and pull out the memory module. After taking it out, cleaning the slot and wiping the gold finger of the memory module, then put it back again. General problems can be solved.

Hard drive failure leads to computer blue screen: Hard drive problems often lead to computer blue screen, such as bad sectors on the hard drive and errors in reading data from the computer, resulting in a blue screen.

Solution: Check the hard drive for bad sectors. If the hard drive has a large number of bad sectors, it is recommended to back up the data and replace the hard drive. If the problem is relatively small, it is recommended to back up the data and reformat the partition disk.

Computer blue screen caused by excessive computer temperature: Excessive temperature of the internal hardware of the computer is also a common cause of computer blue screen. This situation mostly occurs in hot summer, and is mostly caused by excessive CPU temperature. .

Solution: If it is normal, it is recommended to strengthen the heat dissipation of the host, such as adding chassis heat dissipation, etc. If the hard disk temperature is too high, the hard disk may be faulty and needs to be replaced.

Attacked by unknown programs or viruses: This phenomenon usually occurs when we surf the Internet. When we surf, especially when entering some BBS sites, we may be exposed. I lost my IP and was attacked by "hackers" using some software.

Solution: The best way to deal with this situation is to install some defense software on your own computer. Furthermore, when logging into the BBS, you need to set up security settings and hide your IP.

Too many programs are loaded at startup: Do not load too many applications at startup (especially if your memory is less than 64MB), so as not to exhaust system resources.

Solution: You need to uninstall some applications, otherwise a "blue screen" may appear.

Incompatible software and hardware: New technologies and new hardware are developing rapidly. If a "blue screen" often appears after installing new hardware, it is probably related to the fact that the motherboard's BIOS or driver is too old and cannot be used very quickly. Good hardware support.

Solution: If your motherboard supports BIOS upgrade, you should upgrade to the latest version or install the latest device driver as soon as possible.

Solution to the problem that the computer cannot enter the system when it is turned on

1. After turning on the computer, press the shortcut key to enter the Windows advanced options menu and select to start Windows normally;

2. Enter the system After that, right-click the computer to open properties;

3. Click Advanced System Settings in the upper left corner;

4. Click the Startup and Recovery Settings button;

5. Uncheck "Show operating system list time", or change the time to 0, and then confirm.

If the Windows startup manager is displayed after the computer is turned on, and then you cannot enter the system, you can solve the problem according to the above method.

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