I got all my new hardware working, it runs. Then windows is unable to start. It's Windows Vista. I changed basically everything except the hard drive and gpu. How do I save everything and get windows working without dumping the hard drive...500gs worth of stuff. The hard drive is from an old dell, guessing its oem locked, why it isn't working. but i do want to upgrade to windows 7, if i upgrade on the old pc(download from Microsoft) then do a repair will it work?