Here we’ll show you how to use the system file checker – sfc /scannow to repair corruption within Windows 7, Windows 8 and higher.
Step 1. Open an Administrator Command Prompt
Step 2. Type in sfc /scannow
Type sfc /scannow
If any errors are found, run the command 2 more times as sometimes this is necessary. The error message you will receive will be:
Windows Resource Protection Found Corrupt Files but was Unable to Fix Some of Them
Step 3. If errors persist
If there are still errors run:
Dism /Online /Cleanup-Image /RestoreHealth
Step 4. Type sfc /scannow again
Type sfc /scannow again
Step 5. Extract the System File Checker errors from the CBS.log
If there are still errors type:
findstr /c:"[SR]" %windir%\Logs\CBS\CBS.log >"%userprofile%\Desktop\sfcdetails.txt"
to extract the relevant errors and place them in a text file on your desktop
Step 6. Search for errors
Search for the specific errors online and repair
Eventually you want to see either one of the following messages:
- Windows Resource Protection found corrupt files and successfully repaired them
- Windows Resource Protection did not find any integrity violations