i need help regarding window2000 Pro. problem is when ever i logon to window Pro it immediately logoff me after after finishing the logging process. that system was working fine but from few days i am having this problem. with Safe Mode i can logon to window but while using normal mode i face this problem.
Since the behavior does not replicate its self in *Safe Mode* I would say you have something (service or application) running in the background.
You may have a virus or some malicious code running.
Install MSConfig from a XP box and set it to *diagnostic* then reboot.
This should place you in *Normal Mode* and allow you to better trouble shoot it, use MSConfig to see what appz are running, check Task Manager and you registry, you could also check the registry first, in safe mode.