I did a clean install of win 7 ultimate over an xp pro system. Loaded all my programs (25 plus) and my docs folder. Everything was working fine for 2 weeks then when I booted the computer I got the preparing your desktop message. my desk top was totally different and my library files were all missing. The login screen was the same. I looked everywhere for my files but no luck. Disk space has increased by 25gigs. All desktop shortcuts are gone except for office 2000. All my programs are still intact. since this happened I have reloaded my settings and files only for the same thing to happen. It seems to happen at about 4 day intervals.
Any help would be appreciated.