1. Right click [Windows] and select [Windows Power Shell (Administrator)] from the pop-up menu;

2. Execute the following commands in the interface:
DISM.exe/Online/Cleanup-image/Scanhealth

3. If it prompts that no component storage damage is detected, the system files are not lost;
 
4. If the check shows that there is a problem with the image file, enter the following command in the Administrator Command Prompt window: DISM/Online/Cleanup-Image/CheckHealth, and check the degree of file damage;

5. In the last step, enter the DISM.exe /Online /Cleanup-image /Restorehealth command, you can retrieve important files and repair them.