Windows XP continual shutdown/restart

My friend has Windows XP. For some unknown reason her computer has begun to
shut down and restart. This is the message she receives:
"System shutdown. This system is shutting down. Please save all work in
progress and log off. Any unsaved changes will be lost. This shutdown was
initiated by NT AUTHORITY SYSTEM. (then a box with the time, 60 seconds)
Time before shutdown: 60 seconds
Windows must now restart. The Remote Procedure Call (RPC) Service terminated
unexpectedly."

Her computer shuts down, and then restarts, then in a few minutes the
process starts all over. Any help would be appreciated. She hasn't updated
or installed anything.
The information in the Microsoft database pertains to Windows 2000, not XP,
and is really confusing.
Thanks,
ntss

 

RPC ERRORS

Please read this article

http://tinyurl.com/jp11

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notthesamesam bashed at the keyboard and said :

 

Thanks. I see by other posts she's not the only XP user with this problem.
She can't stay online long enough to get the download. I just noticed your
other post about NT AUTHORITY, so I'll get her to try that.
Thanks again.

 

Well, the downloads from Microsoft won't download. She can't do anything.
This is so strange. She clicks install and it does nothing.

 

Thanks for all the help. Information from the various threads on this
problem enabled me to "fix" my friends computer.
This is one time I'm glad I have ME! LOL!
ntss