System File Checker

System File Checker is a utility in Microsoft Windows that allows users to scan for and restore corruptions in Windows system files. This utility is available on Windows 98, Windows 2000 and all subsequent versions of Windows NT family of operating systems. In Windows Vista and Windows 7, System File Checker is integrated with Windows Resource Protection, which protects registry keys and folders as well as critical system files. Under Windows Vista, sfc.exe can be used to check specific folder paths, including the Windows folder and the boot folder.