my son didn't connect monitor to video card but used the upper monitor port. Then tried to load xp OS -. When he figure out his error - the machine won't load OS - locked in hardware monitor Bios - message on the screen says -"Hardware Monitor" "verifying DMI Pool Data" - then its locked. Won't go anywhere - not to bios - keyboard is working as you can ctrl- alt- delete and restart??? I am stumped because Can go anywhere?