Hello, i have a problem with my machine, it runs windows xp, after i had mess with ultra virus killer to delete some stubborn virus, i can't stay longer than 2m in xp normal mode, but in safe mode i dont have this problem, i tried to install other os, format the drives with gparted and all , and it simple dont run at all any os, tried some linux distros also (livecds included) on linux it says something about kernel panic and something messy with cpu's i have p4 3.0 ht... this problems started after a trojan infection and removal, what seems been the cause of this ? how i proceed to install a new os?