Windows 7 Ultimate 64Bits 0x00000050 BSOD (PAGE_FAULT_IN_NONPAGED_AREA). Can't find the cause.

Leito360

Weaksauce
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Apr 17, 2011
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A few weeks ago I clean-installed Windows 7 Ult 64 in the following rig for a customer:

Athlon X2 7750
MSI K9N2 SLI Platinum
2GB DDR2 (I later added another 2, first it was 1x2GB+2x1GB, later 2x2GB)
200GB IDE HDD
XFX GeForce 8500 1GB

The installation went flawlessly, I think I got a BSOD long after the installation finished but I couldn't get the error code and I just rebooted the system and everything went fine, I turned on and off the system several times during the week as I was installing all the programs, I never had an issue during this steps. When I finished, I turned off and unplugged the system until the customer called me to install the computer in his shop. When I connected everything there the BSOD (0x00000050) was there... So I took the computer back to my place, I connected everything and the machine started, no BSOD at all, it started perfectly (Of course, it generated a dump file).
I changed the (1x2GB+2x1GB) config for a 2x2GB (Slots 1 and 2) that I knew it worked fine thinking that possibly the memory was faulty. It all went OK, it survived a few passes of memtest with no errors.

Today I returned the computer to my client, it worked with no issues for a few hours. I turned off the computer and the PSU to install another (second) HDD... powered up, BSOD again, 0x00000050.
I was able to boot it up again with one stick, and then connected the second stick, now occupying the first and third slot, it all worked again, of course, I didn't unplug or turned off the PSU, so the mobo was reciving electricity all the time. The computer worked flawlessly again, I even turned it on and off and reboot it a couple of times just to check it.

With the error popping up so inconsistently I don't know exactly what to do here... I hope it is just the slot 2 bugging around and nothing more serious than that, since the error goes away as randomly as it shows up, as I said, the first time I got the computer to my place to check it, the computer booted up without issues.

I'm attaching the dump files it generated, can anyone help me to pinpoint the cause of the BSOD? Could it be the graphics card VRAM? I can't a health report or sysnative files because I don't have access to the computer right now.
 

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The first thing you need to do is you need to keep the machine until you can figure out how to replicate the fault in order to perform diagnosis and be certain the problem is resolved. Why was Windows reinstalled? Was this an issue prior to Windows being reinstalled?

Have you run Memtest86+ to rule out memory issues?
 
All 5 crash dumps appear to be caused by nvsmu.sys, an nForce SMU driver. Update that and see how it goes.
 
The first thing you need to do is you need to keep the machine until you can figure out how to replicate the fault in order to perform diagnosis and be certain the problem is resolved. Why was Windows reinstalled? Was this an issue prior to Windows being reinstalled?

Have you run Memtest86+ to rule out memory issues?

Windows was reinstalled because I wasnted to deliver the machine as new as possible. The fault is completely random, as I stated, most of the time it started without issues and I didn't touch anything to fix the problem... I think the faulty part could be the VGA but I can't test it with another one, I think this issue wasn't there before windows being reinstalled but I'm not sure about it.

I did run several passes of memtest86+ and it reported no issues, so we can rule the memory out of the problem.

All 5 crash dumps appear to be caused by nvsmu.sys, an nForce SMU driver. Update that and see how it goes.

Today I saw a "nvsmu.sys" as a faulty one, but the thing is the computer has the latest drivers installed :(
 
So, if you remove the added memory and set things back to the way they were does the issue persist?
 
for what ever reason.....your ram is unstable.....one of the sticks or slots is bad most likely.
 
So, if you remove the added memory and set things back to the way they were does the issue persist?

Yes, the issue still persist... I even moved the sticks to slots 3 and 4 and I got the BSOD as well, so I'm thinking it's the chipset, also, I tested all the memory with several passes of memtest86+ and there were no errors reported.

for what ever reason.....your ram is unstable.....one of the sticks or slots is bad most likely.

The ram is perfect, it could be a slot, but as I said, I moved both sticks to slots 3 and 4 and I still got the BSOD.

nForce chipsets....[shudder].

Are they that bad?

Apparently this updated driver version is less prone to BSODs than the drivers Nvidia put out.

I'll give them a try, thanks :)
 
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