OK, so my father-in-law has a PC. When he starts it up, the desktop opens to a clean wallpaper (not his normal desktop) and blinks. You are not able to do anything. I restarted in safe mode, and got the error "Explorer.exe - System Warning Unknown Hard Error" If you click "ok" it just pops up again. Nothing else works. I was able tgo use ctrl-alt-del to get to task manager and tried several things (clean boot, etc.) I was able to download and use the repair tool here, but get to the point where it says "repair did not start for over 30 seconds" and nothing happens. I tried booting from a windows restore boot cd, but have no backup image on his PC. Disabled a couple of items via MSCONFIG, and got the flashing to stop and boot to a normal screen, but still have the pop up error and unable to run anything. PLEASE HELP!