Ok, so my built-from scratch computer has been running well, but at first I had trouble loading windows 7. I eventually got it loaded, but not before I was halfway through getting windows xp on the system because I got frustrated. I stopped it halfway throuhg loading, but I think it portioned or sectored off a ton of my memory. Right now my memory is at 127 GB, free and used. So I was wondering if you think this is what happened?