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8.3

Page fault in non paged area  obn48d7.sys

Asked by reckon in Windows XP Operating System, Computer Memory (RAM), Drivers

Tags: page fault, stop 50, XP, BSOD

A Dell Dimension 4700 running Windows XP started out booting to the choose-user screen, then when it tried to load a user profile, it blue-screened to STOP: 0x000000c5. Last Known didn't work. No luck getting into safe mode either.

Thinking it was a bad driver or update, I used an Ultimate Boot disk to force a system restore--there was only one point available, but that didn't do the trick (so I restored it to the original). I ran hardware diagnostics, and all passed. Since I also suspected viruses, I pulled the drive, slaved it to another machine and scanned for malware, which it found and removed. Also did chkdsk, fixmbr, and fixboot. Still the same BSOD.

I pulled the modem card, unplugged the CD/DVD drives, and swapped out one of the two memory modules, and when it booted up, it went directly from the XP splash screen to BSOD, this time:

PAGE_FAULT_IN_NONPAGED AREA  obn48d7.sys
STOP: 0x00000050

I replaced everything the way it was, and still the same message. Search engines turn up nothing on obn48d7.sys, so I'm left scratching my head.

I'm running memory tests now.

How can I get this machine up and running?

(I'll monitor this question closely and close it out promptly as soon as the problem is resolved.)
[+][-]09/29/09 12:06 PM, ID: 25452209Accepted Solution

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About this solution

Zones: Windows XP Operating System, Computer Memory (RAM), Drivers
Tags: page fault, stop 50, XP, BSOD
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Solution Provided By: orangutang
Participating Experts: 5
Solution Grade: A
 
[+][-]09/28/09 02:15 PM, ID: 25443455Expert Comment

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