I'm looking at building a new pc for myself and giving my old pc to my parents, I would like to keep my hard drive and just swap their hard drive into my computer then move mine into the new computer. I've heard of driver issues and whatnot especially since their computer uses an amd processor and mine is an intel and the new cpu will be an amd. I have no experience building a pc, so can someone give me an idea of what the easiest and most cost efficient way of doing this would be? I'd like to avoid buying another copy of windows if I can, but if it's unavoidable, I'll deal with it.