I try to install win7 OS but not even a single time it has been successful.....I think that I'm making mistake while choosing (x64) or (x84).. But here the fault is it starts to install at the final step the computer will restart then it show a recovery screen that windows has been recovered from unexpected shutdown......then I'll select start windows normally.....then it will enter into installation screen and shows me the error message that installation is failed due to unexpected shut down.install windows again.....this happens again and again.....what would be the problem? do i have problem in my RAM or mother board? or wrong installation??? please help me...........I'm dying.................