hi everybody! i have gx720 barebone and i tried to install vista ultimate 64 bit on it! everything seems nothing happened ! but when i tried to activate it and restarting! its stops at ms boot screen !the green slide still running ! but it doesnt boot ! and i have to reinstall OS again ! i need help ! cpu t9600 4gb 7k 320gb and i usually this activation way and OS alot. so do i need update bios or what ? i need help !