Hi, I have been searching this forum for a while and feel a bit more lost that originally. I have a old laptop that I installed w7 on. I was getting slow, so I wanted to get it so empty as possible. I have backed up all my files. Now I want everything to go, and start with a virgin windows 7. When I installed win 7 it saved all my files to windows old (as it should) and all programs are left int c:/programfiles/. How can I get rid of everything? I tried clean in the diskpart command. But it says it cannot(because of having system files on it). Thanks in advance.