"This PC needs to be repaired" error occurs when Windows starts, which is usually caused by BCD corruption, hard disk problems or hardware changes. 1. Use Windows installation media to enter the recovery environment; 2. Run bootrec /fixmbr, bootrec /fixboot, bootrec /scanos, bootrec /rebuildbcd through the command prompt to rebuild BCD; 3. Use chkdsk to check and fix disk errors; 4. Try to start repair, system restore or reset this computer. In most cases, rebuilding BCD can solve the problem. If the hard disk is damaged, it needs to be replaced or transferred. Power outage or forced shutdown should be avoided during operation.

An error "This PC needs to be repaired" occurs when Windows starts, which usually means that the system cannot load normally, which is often caused by boot configuration data (BCD) damage, hard disk problems, or hardware changes. This problem looks scary, but is fixed in most cases.

1. Use the installation media to enter the recovery environment

This is the most basic and important step. You need a Windows installation USB or CD to boot the computer:

• Insert the installation media and restart the computer
• Before the startup screen appears, press the corresponding startup shortcut key (usually F2, F10, Del, etc.) to enter the BIOS settings, and change the startup sequence to boot from USB or CD-ROM
• After successfully entering the installation interface, click "Next", and then click "Repair Computer"

This allows you to enter the "recovery environment", where multiple repair tools are available.

2. Rebuild BCD using the command prompt

This error is often caused by corruption of the boot record or BCD file. Use the bootrec command to try to fix:

In Recovery Environment, select:

• Troubleshooting → Advanced Options → Command Prompt

Then enter the following commands in turn (Enter each item):

 bootrec /fixmbr
bootrec /fixboot
bootrec /scanos
bootrec /rebuildbcd

These commands repair the main boot record, boot sector, and rescan and add Windows installation to BCD.

Note: If the system prompts that the operating system cannot be found or the path is incorrect, you may need to use diskpart to confirm whether the system partition is properly mounted.

3. Check whether the hard disk has physical or logical errors

A bad hard drive or a file system error can also cause this problem. You can check and fix disk errors using the following command:

Enter:

 chkdsk C: /f /r

Where C: is the partition where your system is located, which may vary depending on the device (such as D drive or E drive). This command scans for disk errors and tries to fix it.

If you are not sure which partition is the system disk, you can use diskpart to view the volume label information.

4. Try to start repair or system restore

In the advanced options of "Recover Environment", you can also try:

• Startup fix : Automatically detect and try to fix startup issues
• System Restore : If you have created a restore point before, you can select a restore point to roll back
• Reset this computer : If none of the above methods work, you can consider keeping the file or completely clearing it and reinstalling the system.

Tip: If the computer has recently replaced the hard drive or motherboard, this error may also be triggered because the system has identified a major hardware change.

Basically these are the methods. In most cases, it can be done by rebuilding BCD with a command prompt, but if there is a problem with the hard disk, you may need to change the disk or transfer the data. Be careful not to interrupt the power supply or force shutdown during operation, as it may aggravate the problem.

The above is the detailed content of How to fix 'This PC needs to be repaired' error in Windows?. For more information, please follow other related articles on the PHP Chinese website!