i have installed win2000 on my pc. my pc restarts automatically after a count down. can any one help me to solve this problem.

please mail me at: noemailaddys@allowed

Your pc might be infected with a virus
When the count down starts try this if it works it means that there is a virus on your computer.

[go] start menu - run [then type] shutdown -a it will stop the pc from restarting

I am a bit unshure of the correct way to type it right now if the above does not work try these
shutdown-a
shutdown -a
shutdown_a
shutdown _a

http://www.blackviper.com/AskBV/tech10.htm
http://www.securitybastion.com/BlasterRemoval.htm