I initially thought that maybe the computer was infected with the Blaster worm, as the behavior of this computer is similar to a computer with Blaster. Once you start it, the computer will wait about 1 minute and then shutdown/restart itself. It never breaks out of the cycle. What else might be causing this? If I turn off the RPC service, the problem doesn't occur -- however, obviously, this is not an acceptable "fix." :-)
Any help would be appreciated. Thanks!