Windows includes one utility for such problems as yours , need only access the command prompt in safe mode , in normal mode , or when booting menu from a boot dvd , If you have command line only write SFC /SCANNOW , I see it to reinstall windows , sometimes it also causes corrupt Account
i together more information, : you pc does BSOD - blue screen of death ?
i together more information, : you pc does BSOD - blue screen of death ?