How it works:

DISM can connect to the Internet to compare your current system files with the official original image, and then restore the different files.

Command usage:

1. Press WIN+X and select Command Prompt Administrator;

2. After opening, execute the following two commands in sequence:

DISM.exe /Online /Cleanup-image /Scanhealth

DISM.exe /Online /Cleanup-image /Restorehealth

The first command is to scan all your system files and compare them with official system files.

The second command is to restore those different system files to the official source files of the system, which is similar to reinstalling.

To repair an online image using some of your own sources without using Windows Update, type:

Dism /Online /Cleanup-Image /RestoreHealth /Source:c:testmountwindows /LimitAccess

If there is /online in the command, it needs to be operated under the Internet. The Win10 system will automatically restore the damaged files from the official image.

The above is how Win10 uses the Dism command to automatically check the abnormal file repair system. If your system has an unknown failure, you can try using the Dism command to check the file repair system.