Hello, I’m Virginia an independent advisor with 20 years of expertise in fixing my own & friends’ PC problems.
Which Windows 10 build are you running - 1903, 1909, 2004 or 20H2 (Oct 2020)?
To specify a source you require the Windows installation USB or .iso.
OPTION 1:
Insert your installation CD or USB. From Admin Command, run:
- Dism /Online /Cleanup-Image /RestoreHealth /Source:wim:D:\sources\install.wim:1 /limitaccess
The install.wim file will be in the Sources folder of a mounted Windows 10 ISO.
- sfc /scannow
NOTE: may have to run multiple times until you get the message: Windows Resources did not find any integrity violation.
OPTION 2:
Open the drive where your installation media is and run Setup.exe. Follow the instruction to perform update which actually does a repair.
No6 here: https://www.tenforums.com/tutorials/7808-use-di...
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products).
Please do not download any repair tool which may be offered by this site other than the ones I mention/recommend.
Thoroughly research any product which is mentioned here before you decide to download and install it.