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"RPC Terminated" Causes Continuous Re-Boot - Even in Safe Mode !

Hardware/Software:
Dell OptiPlex GX110, P-III, 512MB RAM, CD-R, WinXP Pro, NIC

Situation:
Client reports and I witnessed first hand - PC boots - very, very slowly (~5-7 minutes) - Windows Desktop begins to appear - before much of anything else loads - Message window appears and says (approximately:) "Must restart now - Remote Procedure Call (RPC) Service Terminated Unexpectedly." The PC then slowly re-boots and does the same thing over again.

Client reports that this occurred directly after installing Google Desktop Search tool. Also reports he installed the same Google software on a home PC - and the home PC is also getting RPC related errors.

Actions Taken to Date:
Booted into Safe Mode - it took almost as long to boot into Safe Mode (~5 Minutes) as it did to do an ordinary boot!  I never have seen this before!?!?!  (Tried this multiple times.) SAME ERROR comes up in Safe Mode - obviously the issue is on a pretty fundamental level.

Obtained a WinXP Pro (Upgrade) disk - attempted to get to Recovery Mode - but stops after password at C: prompt. Somehow I recall Recovery mode replacing files, etc - without C: prompt involvement - no?

Has anyone seen this before - and more importantly - what suggestions do you have for repair?

Thanks in Advance,
Mark
SOLUTION
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Nirmal Sharma
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SystmProg-
Thanks for the speedy response - but I'm a bit confused by some of your instructions:

>>Let the screen come upto Login screen...

I can't get to a Login screen - execpt a prompt for the Administrative password in Recovery mode, where it then leaves me at the DOS prompt at c:\Windows - is that what you mean?

>>goto another computer user Registry Editor...
 I don't have another computer on-site.

Can you clarify these two steps please? Beyond that I have no problem searching /editing the registry if given instructions on what to look for/change.

Thanks,
Mark
I mean to say take this pc to a network and then connect this pc to hub and access the registry (This is called Accessing Network Registry).

If you have a Cross Over cable then you can connect two PC directly means NIC to NIC.
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mdiiglio..

His pc reboots as soon as he logs on..then when he will issue Shutdown command.?
Hey Buddy,
Yea, like I said I couldn't tell if he can get to the desktop or not.

If he can he'll have 30 seconds to click start >> run >> cmd
shutdown -a

If he can't then I said to just ignore my instructions.
I can't seem to take any action on the desktop - or try gaining control when it boots - machine is either responding so slowly it apprears to be locked or it actually is "locked." Remember this PC is taking more than 5 minutes to get to the desktop - even in Safe Mode.

Also - it's a solo desktop PC in a single person office - so there is not abilty to network it with another PC.

Best I seem to be able to do is get into Recovery Mode with the WinXP Pro CD were I reach a DOS prompt - so potentially I could run something under DOS.
Is there any way to check the registry under DOS?

 I've also prepared a Boot Disk with the DOS version of F_Secure on it (w/the latest virus defs on it.)

Any further thoughts on how to retake this PC.

>>>Is there any way to check the registry under DOS?

That's what i was thining and could not find..so i posted the soluton using Network Registry.
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This is probably a script virus (msblaster related) that keeps shutting the rcp process.
Go to symantec and download the removal tool.
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Thanks all for the suggestions. Here's the long story of how this was resolved - on both PCs:
The first part of the puzzle was solved by taking mdiglio's suggestion of using "shutdown -a" - which originally I didn't think I couldn't do - for two reasons:
One was I didn't think the PC allowed time before it shut down to get the command in there and the second was I couldn't get the Task Bar to come up. BUT I WAS WRONG ON THE FIRST ASSUMPTION - it turned out that I had a very short window (maybe 20 seconds) when I could gain control over the PC - but I still had the second problem - there was no access to a Task Bar - hence Start Button etc.  A quick call to a buddy reminded me that Windows-Key + R opens the command prompt - so after a 5+ minute boot-up, at just the right moment I could hit that key combination - then type "shutdown -a" - and stop the system shut down. It turns out that a minute or two later it came up with the same shut down message all over again. What I learned to do was keep the command prompt window open - with the "shutdown -a" already typed in - and as soon as the message would reappear - which it did every couple of minutes - then I'd toggle to the window and hit enter.

Next I tried SystmProg's suggestion of scouring the PC's Registry and Startup areas etc, etc - but I came up empty. Then I decided to uninstall the Google Desktop Search - which is what the client had reported installing just before the problem started. For good measure, I also uninstalled GoToMyPC - as I figured that it might also be involved with the RPC error - being I believe an app that uses that - and poof - the RPC shutdown message had stopped!! I can’t say if it was the removal of which application or both that seemed to stop the message. Next I went to System Restore - and restored the PC to the day before install - just for good measure - and the machine returned to it's normal happy self! Once  completed that - my client said – “Great, now let's go do the same thing on my PC at home” - and that's exactly what we did - and that machine (which was physically identical to the office PC - and had virtually identical software too) was completely cured as well.

For those of you who accuse a virus/worm – both PCs were running SP2, completely up-to-date on all OS patches and had properly updated and active antivirus programs running – further making the case for a problem somewhere else – although given the original symptoms – I did join in and diagnosed it (as I did to the client) as a probably virus/worm. This was also based on the fact I couldn’t find anything on the web relating the Google Desktop with installation problems or PC lock ups – still can’t. However…

Here in the New York City area, I was listening to WCBS 880AM which has a brief PC segment a couple of times a day – and the guy who does it mentioned that he had previously touted the Google Desktop app -  but had gotten feedback from a number of listeners that it clobbered their PCs. That’s as much as he said – but I really think that somehow the Google Desktop screws up something – maybe something related to GoToMyPC – I don’t know. I do know that I have a very happy client now

As to distributing points – that ‘s a bit tricky – but many of you had valid points:
180 for SystmProg for a quick & logical response - and some measure of persistence, even though in this case it didn't solve the problem.
200 for mdiglio for giving me the key method that helped me turn things around - that "shutdown -a" I'll keep that in my mental bag of WinXP tricks.
80 for cmegson for providing a great link on Registry Restoration - even though it turned out not to be my solution this time.
40 for senad for providing a logical link about worm removal - even though it wasn't part of the mix this time either.

Thanks again - one and all who helped me get though this challenge.
-Mark
Hey...good job fixing this Mark.
Thanks for letting us know how you did it and thanks for the points
Thanks!