Cannot Login in Windows XP - Another Solution with AVG

It happened so that I could not log in to Windows XP after start up. From the login screen it tries and at once logs off.
There are different solutions in the Net (repairing userinit.exe) that didn't help me. I should mention that I could log in in Safe mode so I could look at the logs and it showed me that the AVG free installation was broken.
I started the computer in Safe Mode with Networking. From there I uninstalled the AVG and restarted the machine. This time I could log in to Windows XP without a problem. Fresh download of AVG Free and a new installation finished the repair.
Hope that helps you. If it doesn't help the Windows CD can repair your installation.