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Intermittent BSoD: Page Fault in Non Paged Area

spoxox asked
Last Modified: 2013-12-26
Intermittent (every 4-8 weeks) crash blue screen reports PAGE FAULT IN NON PAGED AREA. I assume this is a failed memory access attempt. I have, over the course of time, replaced all RAM and my video card. This PC gets used several hours daily.

The crash has happened both times I tried to drop a flour bomb in MS Flight Simulator X (atypical activity; computer is usually used for web access and development); it's otherwise unpredictable. Seconds after boot with two apps open (less common), and after long memory intensive sessions. This can't be related to software or hardware install; I tried the on(blue)screen suggestions to no effect.

A bunch of system info in the snippet.

Could this be a cache problem on the motherboard?

OS Name	Microsoft Windows XP Professional
Version	5.1.2600 Service Pack 2 Build 2600
OS Manufacturer	Microsoft Corporation
System Manufacturer	GATEWAY
System Model	D915GAG_
System Type	X86-based PC
Processor	x86 Family 15 Model 3 Stepping 4 GenuineIntel ~3000 Mhz
Processor	x86 Family 15 Model 3 Stepping 4 GenuineIntel ~3000 Mhz
BIOS Version/Date	Intel Corp. EV91510A.15A.0067.2004.0722.1717, 7/22/2004
SMBIOS Version	2.3
Hardware Abstraction Layer	Version = "5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)"
Total Physical Memory	2,560.00 MB
Available Physical Memory	1.60 GB
Total Virtual Memory	2.00 GB
Available Virtual Memory	1.96 GB
Page File Space	3.05 GB
Name	NVIDIA GeForce 7600 GT
Adapter Type	GeForce 7600 GT, NVIDIA compatible
Adapter Description	NVIDIA GeForce 7600 GT
Adapter RAM	256.00 MB (268,435,456 bytes)
Installed Drivers	nv4_disp.dll
Driver Version
INF File	oem17.inf (nv4_NV3x section)
Color Planes	1
Color Table Entries	4294967296
Resolution	1280 x 1024 x 60 hertz
Bits/Pixel	32
Driver	c:\windows\system32\drivers\nv4_mini.sys (, 3.81 MB (3,994,624 bytes), 8/4/2004 1:29 AM)

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Mohammed HamadaSenior IT Consultant

Could be Heat sometimes.... Try to uncover the Case while you are running "MS Flight Simulator" and pass your finger tips on the VGA card's chip to see if its heated.

If it is you might need anther cooling fan inside the case...


Great way to get a day away from the computer.

Memtest+ showed an error (twice) in test 4 with good and bad addresses. I gather that's suggestive of a failing module (my reference for interpreting results of memtest+: http://www.houseofhelp.com/forums/showthread.php?p=187972) so I'll do a little RAM shuffle later. I have extra DIMMs; hopefully it's not a slot.

Vendor's disk diagnostics all OK.

Chkdsk deleted an index for a file and then rescued that same orphaned file; otherwise OK.

FSX still crashes: BSoD suggests mismatched memory, etc.

Will return after completing RAM switches.


Memtest+ did reveal RAM problems. I tried to change the positions of my existing DIMMs (2x1GB, 2x256MB) but this mb/cpu doesn't like to do that (other cases documented on web) and wouldn't boot for a while. So I got a really big hammer....then went for a walk. I replaced the RAM (2x1GB samsung, 2x512mb infineon) and Memtest+ is happy, but FS still crashes (I realize now it's a different crash - with no specific message - than the PAGE_FAULT_IN_NON_PAGED_AREA). The links are helpful; I'm thinking it's a problem with cache or maybe a bus as the HD passed all tests and I've changed video cards. Short of changing the mobo, I guess I'll live with it. Of course, maybe it won't return.

Thank you all.
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Your welcome
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