Hi all, I've been having a locking up problem for sometime now, and I've come to the conclusion that it must be the cpu. I've replaced almost everything else and updated every driver. Still the bloody thing locks up, without warning. It can lock up after five mins or twelve hours, playing games or sitting idle, downloading anytime. Anyways, if I replace the cpu, do i need to re-install windows or anything? Is it just a case of swapping one for another and boot up?