I'm building a new PC and I want to use my old HDDs. My previous PC ran on 32-bit Win 7 and I plan on running 64-bit Win 8.1 on my new rig. I know I will have to do a clean install, but would creating a system image using Win 7's backup wizard keep all my personal files and programs while I upgrade to 64-bit Win 8.1? If not, is there a way to keep/backup my files besides the old fashioned way?