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Table of Contents
Use Command Prompt to fix startup issues
Check and repair system files
Fix hard drive errors
Home System Tutorial Windows Series How to repair Windows 10 using command prompt?

How to repair Windows 10 using command prompt?

Jul 13, 2025 am 02:28 AM
command prompt

The methods to fix Windows 10 problems using the command prompt are as follows: 1. When fixing startup problems, enter the command prompt from the installation media to run the bootrec /fixmbr, bootrec /fixboot and bootrec /rebuildbcd commands in turn; 2. When checking and repairing system files, run the sfc /scannow or DISM /Online /Cleanup-Image /RestoreHealth commands as administrator; 3. When repairing hard disk errors, enter chkdsk C: /f /r (C: is the system disk) at the command prompt and confirm restart when prompted. These steps can solve common problems such as boot corruption, system file exceptions and disk errors respectively. Before operation, you need to understand the functions of each command to prevent incorrect operation.

How to repair Windows 10 using command prompt?

There are many ways to fix Windows 10, and using Command Prompt is one of the more direct and effective ways. Especially when the system cannot start normally, entering the recovery environment running command prompt through the installation media can solve many key problems.

How to repair Windows 10 using command prompt?

Use Command Prompt to fix startup issues

If your computer does not enter the system properly, the most common problem is that the boot record is damaged or lost. At this time, you can use the following command to fix it:

How to repair Windows 10 using command prompt?
  • Insert the Windows installation USB disk and boot from the USB disk
  • Go to Troubleshooting > Advanced Options > Command Prompt
  • Run the following commands in turn:
    • bootrec /fixmbr
    • bootrec /fixboot
    • bootrec /rebuildbcd

These commands will repair the main boot record, boot sector, and rebuild the BCD (boot configuration data). After completion, enter exit and restart the computer.

Check and repair system files

If the system can barely start but runs unstable, it may be that the system files are corrupted. You can use the system's own tools to scan and repair:

How to repair Windows 10 using command prompt?
  • Open a command prompt (run as administrator)
  • Enter one of the following two commands:
    • sfc /scannow : Scan and try to repair protected system files
    • If the above command is useless, you can try a more thorough check:
      DISM /Online /Cleanup-Image /RestoreHealth

These two commands may take a certain amount of time to complete, so do not close the window during execution. After completion, it is recommended to restart it once to see the effect.

Fix hard drive errors

Sometimes bad channels or file system errors in hard disk can also cause system exceptions. You can run the disk checking tool via the command prompt to troubleshoot:

  • Enter:
    chkdsk C: /f /r
    (Note: C: It is your system disk, please replace it if it is not)

  • The system will prompt you whether to check the volume next time you start it up, enter Y to confirm

  • After restarting, the system will automatically check the disk

This process will run automatically once when the system is idle, which is suitable for handling some non-physical hard disk errors.


Basically these common operations. Although it seems that there are many steps, each step is not complicated. As long as it is executed in order, many basic problems can be solved. But the same thing is true. It is best to confirm that you understand the role of each command before starting a move to avoid causing more trouble by mistake.

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