This describes my problem. It happened over night: My computer (which runs Windows XP) starts normally. The Windows splash screen appears correctly and then the login prompt correctly loads. You can then enter your user name and password like normal, but as soon as you try to login you are IMMEDIATELY logged back out again. The desktop doesn’t even load. It moves immediately back to the login window where you can then enter your user name. No matter how many times you try to login you always experience this immediate logout. Even if you try to login to the computer in safe mode you still experience the same problem. I moved my problem to this site as I think it is really a XP issue. Not sure if it is a virus or just what. I have read several stories on the internet on simular issues but not sure I can trust them.