cd ویندوز رو بزار و این دستور رو تو cmd که رفتی تایپ کن
sfc /scannow
یک کم طولانی هست چک کردنش
How to use scannow sfc...
The main reason for using this utility is when you suspect there may be a problem with a Windows XP system file.
Perhaps you get a dialog box appear informing you of a problem with a .dll file, or your program will just not load! It is therefore worth checking to see if there are any corrupt system files using scannow sfc.
To do this simply go to the Run box on the Start Menu and type in:
sfc /scannow