Hi, i was at my teachers house fixing his computer last night, had a virus that Norton and AVG could not find, the computer will turn on and anywhere in the boot up process(either before starting windows or during it, or after it loads all start up programs in windows) it will jsut reset, I'm guessing this is a virus anyway, havent had this problem until last week, he thought we should wipe the whole thing out, which we did, so i formatted the HDD installed Window xp home, put on ZoneAlarm, AVG and Firefox and he just emailed me last night saying it was still there, I was wondering is this a virus that exists somewhere on the HDD that doesn't get formatted by the XP disc such as MBR?(I have no clue if XP disc formats the MBR also) I was thinking about running one of those low level format programs such as Active Killdisk to get rid of it this time, or do you think it may be a hardware conflict? however he has not installed any new hardware or software, I know his kids must go to game sites such as Nick.com or w/e it is. Any help greatly appreciated.