XP stopped while starting. Tried repair installation. Roleback was not working. I had only the option of a total reinstall. Never seen anything like that before. And be sure I know how to repair Windows. I'm a longtime betatester for different companies (since 1991) and I have seen many problems. This one was extreme. Installed the new SP. Restarted XP...and that was it. Never reached even the password screen. Repair install..stopped before reaching the final. Even replacing the registry files was not helpfull. (I have more computers. This one here is normally only for graphics) Thomas