When i start my computer ( im on a different one right now) it shows a message fatal system error C000021A. I tried to fix this problem by putting the xp disc in and making it boot up so i can "repair". I click "repair" and it requires an admin password but i never remembered entering a password in. Any suggestions? i realllly dont want to reformat it because i have alot of files on the computer that i dont want deleted. =/ Is there any other way i can fix it without deleting my hardrive?