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Lenovo Computer Restarts Randomly

This has baffled the hell out of me. Anyone please help.

Users computer is a fairly new desktop computer. It's a Lenovo 23U Desktop with windows xp.
Her computer randomly restarts. The restart is an abrupt one(similar to if you pull out the plug and plug it back in and power up the computer). I've attached the mini-dump logs. I hope this helps.
We swapped her hard drive with an identical known good working computer and the same issue happened. She usually has multiple programs open(Outlook, IE, Word) when the restart happens.

She has a roaming profile, so she logged into another workstation and the same thing happened on that workstation. It almost seems that it's something in her profile which doesn't make any sense at all. The workstation she logged into never had this issue before also.

If you need specs, I can provide it.  I'm hoping the Dump Files will give enough insight.

Mini Dump Files located here (Sorry, couldn't post them here because they wouldn't take .dmp files).

Password is : experts
Avatar of Jonvee

Took a look at five minidumps at random out of your total of ~52, and using WinDbg the results were all different!    
Will checkout a few more ...

Conceivably it could therefore be a memory problem.  Suggest you try testing the RAM using memtest86+  v1.70 :

You could also try again posting future minidumps by changing .dmp files to .txt files.
Checked three more minidumps.  
The 1st one here mentions "tvtumon.sys" which is the same as one of the first five dumps checked earlier >>
3rd one stated "memory corruption".  

IMAGE_NAME:  tvtumon.sys
FAILURE_BUCKET_ID:  0x7E_tvtumon+1548
The Lenovo Rescue and Recovery 'tvtumon.sys' is inferred here.

IMAGE_NAME:  savonaccesscontrol.sys
FAILURE_BUCKET_ID:  0xA_W_savonaccesscontrol+2789


IMAGE_NAME:  memory_corruption
FAILURE_BUCKET_ID:  0x8E_nt!MiLocateAddressInTree+4
Presumably there has been a thorough check for virus and/or Malware infections ?
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I'll try that and let you know how it goes.

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We ended up wiping out the Roaming Profile and the local. So in other words, we started from scratch due to the time constraint. I forgot about the default restart on error in XP. We did uncheck that and then we got the ever loving BSOD. We did take a look at the NTUser.Dat and did find that it was most likely the error.

Thank you Dorkestra. Points to you!

For the other user who suggested MemTest, we did try that prior.