I have a huge problem with my aunts pc. The old harddrive died and when I put in any hdds with xp or vista or 7 the pc cant be rebooted or shutdown otherwise the hdd doesnt go into safe mode or actual windows. I have used my 1TB HDD Win7 x86 and it does the same thing. I have to always do a clean install and then leave the pc always running n turn off auto updates cause if it reboots it gets stuck in that loop. WTH is goin on?