ok on windows 98 you can selet open then type run sfc (system file checker)

i tried this on xp but only a dos box opens for a brief second then shuts .
how do i run sfc on xp please
thanks

When the command prompt appears type sfc /scannow then press enter.

here are a list of the command switches

The following is the command-line syntax for Sfc. Open a command prompt and type sfc and one of the swtiches after it.


/SCANNOW - Scans all protected system files immediately.
/SCANONCE - Scans all protected system files at the next boot.
/SCANBOOT - Scans all protected system files at every boot.
/REVERT - Windows XP: Return to default settings.
/CANCEL - Cancels all pending scans of protected system files.
/QUIET - Replaces all incorrect file versions without prompting the user.
/ENABLE - Enables WFP for standard operation.
/PURGECACHE - Empties the file cache and scans all protected system files.
/CACHESIZE=x - Sets the file cache size. The default size of the cache is 0x32 (50 MB).