HOW TO REPAIR BROKEN WINDOWS 7

To check system hard drive and fix errors:

chkdsk c: /f 

To check system hard drive, fix errors, locate and mark bad sectors:

chkdsk c: /r

Very basic command to check integrity of system files:

sfc /scannow

If sfc can’t help you try DISM.

Check system health for any corruption presence:

Dism /Online /Cleanup-Image /CheckHealth

Check system health for store corruption presence:

Dism /Online /Cleanup-Image /ScanHealth

Finally, repair command:

Dism /Online /Cleanup-Image /RestoreHealth

PS If i recall something that i’ve missed, will post it as an update later on.

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