I shut the computer down and it restarts

[Stingray312]

I replaced a harddrive in my computer and it runs perfectly except that when I shut down my computer it will restart. What is the problem?

 

[StrangleHold]

http://support.microsoft.com/kb/311806/en-us

http://www.kellys-korner-xp.com/win_xp_restart.htm