Solved Regular BSOD - 0x50 - Page fault in nonpaged area

nick95610

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Hi guys

I've had a lot of problems with BSODs on my new computer. I don't know if a record of events is important for the diagnosis, but I'll go ahead and write it out, and if it's not, feel free to just skip to the attached file.

I recently got a few pieces of new hardware - MB, CPU, GPU, RAM, PSU and UPS. When I installed them, all seemed good at first. I went through the motions of installing drivers and all that jazz, and then got around to playing with it. I think around 2 hours in was when I got the first BSOD, but it didn't happen again for the rest of the night, so I ignored it.

A few hours later, I'm woken up by the UPS beeping. The power had gone out (a common occurrence and the reason I bought the UPS in the first place). It turned out the electrical company had screwed up well this time, and rather than a 2 minute blackout, it lasted all day. When that fact became clear, I shut down the computer (still running on battery power from the UPS) the regular way and waited for the power to come back on.

Power comes back on. From that point on, between 2 and 10 minutes from booting up the computer, I get the same BSOD I'd gotten on the first day. I do basic hardware troubleshooting in the form of trying my RAM chips one by one, trying to run on the old graphics card, unplugging excess hard drives, and running it through the UPS vs running it plugged in directly. Nothing changes.

So I figure it's a software issue. I'd read that virtual imaging software can cause this BSOD, so I unistalled them all. No help. I read that antivirus software can cause this as well, so I unistalled that too. Now, here's the interesting part. After uninstalling Avast, it worked good for about an hour or so. I thought it was fixed, but it went right back to crashing after that time period was over.

I went back to hardware. The only part I hadn't swapped out (apart from the MB and CPU, which I can't) was the PSU. I dug out my old one and plugged it in, booted up, and - voila! - it didn't crash for the rest of the night. Satisfied that I'd gotten to the root of it after 6 hours of "testing" in the form of playing games, I go to sleep, leaving the computer on to see if it would still be working in the morning.

It wasn't. I got up this morning, and the Windows welcome screen was waiting for me. Checked my minidumps, and it turns out it had been crashing and restarting itself all night while I slept. Much to my frustration, it's still doing it now as I write out this post in three sentence increments between BSODs.

I am at an absolute loss. The only conclusion I can come to is that both PSUs got fried by the UPS when the power fluctuated, but my evidence for that is flimsy and certainly not grounds for accusing the supplier for pushing faulty hardware.

So, dear internet people, I come to you. Is there anything in the dumped files that can give ANY sort of hint as to why this is happening? Your time is greatly appreciated.
 

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Windows 7 Ultimate x64
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Windows 7 Ultimate x64
Welcome
A lot of reports, most with the same answer. The problem seems to be your Avast. Uninstall Avast, then in its place use Microsoft Security Essentials. Start with a system restore point so it will be easy to go back if the problem is not solved. Good luck

EDIT Reading your post again, it seems you did uninstall Avast, you left a driver and it is the cause.
aswsnx.sys
 

My Computer My Computer

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Windows 10, Home Clean InstallIntel Core2 processsor Q8200(2.33Ghz 1333FSB)...6 gbATI Radeon 256MB HD3650
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Dell XPS 420
OS
Windows 10, Home Clean Install
CPU
Intel Core2 processsor Q8200(2.33Ghz 1333FSB) Quad Core Tech
Motherboard
Dell
Memory
6 gb
Graphics Card(s)
ATI Radeon 256MB HD3650
Sound Card
Intergrated 7.1 Channel Audio
Monitor(s) Displays
Dell SP2009W 20"
Hard Drives
640 GB Serial ATA Hard drive
Cooling
Fan
Keyboard
Dell USB Keyboard
Mouse
Dell Premium Optical USB
Internet Speed
DSL 2.85
Hi Rich

I already uninstalled Avast. It gave me an hour-long reprieve from the BSODs, but they resumed in their normal fashion thereafter. Looks like that wasn't it.

Edit: A ha. Could you tell me how I'd uninstall the driver? I'm a bit of a noob. :)
 

My Computer My Computer

At a glance

Windows 7 Ultimate x64
OS
Windows 7 Ultimate x64

My Computer My Computer

At a glance

Windows 10, Home Clean InstallIntel Core2 processsor Q8200(2.33Ghz 1333FSB)...6 gbATI Radeon 256MB HD3650
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Dell XPS 420
OS
Windows 10, Home Clean Install
CPU
Intel Core2 processsor Q8200(2.33Ghz 1333FSB) Quad Core Tech
Motherboard
Dell
Memory
6 gb
Graphics Card(s)
ATI Radeon 256MB HD3650
Sound Card
Intergrated 7.1 Channel Audio
Monitor(s) Displays
Dell SP2009W 20"
Hard Drives
640 GB Serial ATA Hard drive
Cooling
Fan
Keyboard
Dell USB Keyboard
Mouse
Dell Premium Optical USB
Internet Speed
DSL 2.85
I ran the uninstall tool. It said it was successfully removed and rebooted the system to seal the deal. I'm gonna leave the computer on for a while, and if it doesn't crash, I'll update the thread and mark it as solved.

Thanks for the help, Rich. :)
 

My Computer My Computer

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Windows 7 Ultimate x64
OS
Windows 7 Ultimate x64
Hope that you got your BSOD sorted. I think my advice will work, however.
 

My Computer My Computer

At a glance

Windows 10, Home Clean InstallIntel Core2 processsor Q8200(2.33Ghz 1333FSB)...6 gbATI Radeon 256MB HD3650
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Dell XPS 420
OS
Windows 10, Home Clean Install
CPU
Intel Core2 processsor Q8200(2.33Ghz 1333FSB) Quad Core Tech
Motherboard
Dell
Memory
6 gb
Graphics Card(s)
ATI Radeon 256MB HD3650
Sound Card
Intergrated 7.1 Channel Audio
Monitor(s) Displays
Dell SP2009W 20"
Hard Drives
640 GB Serial ATA Hard drive
Cooling
Fan
Keyboard
Dell USB Keyboard
Mouse
Dell Premium Optical USB
Internet Speed
DSL 2.85
No luck. Crashed again.

Do you have any other ideas?
 

My Computer My Computer

At a glance

Windows 7 Ultimate x64
OS
Windows 7 Ultimate x64
Give me the report, so that I could look at it.
 

My Computer My Computer

At a glance

Windows 10, Home Clean InstallIntel Core2 processsor Q8200(2.33Ghz 1333FSB)...6 gbATI Radeon 256MB HD3650
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Dell XPS 420
OS
Windows 10, Home Clean Install
CPU
Intel Core2 processsor Q8200(2.33Ghz 1333FSB) Quad Core Tech
Motherboard
Dell
Memory
6 gb
Graphics Card(s)
ATI Radeon 256MB HD3650
Sound Card
Intergrated 7.1 Channel Audio
Monitor(s) Displays
Dell SP2009W 20"
Hard Drives
640 GB Serial ATA Hard drive
Cooling
Fan
Keyboard
Dell USB Keyboard
Mouse
Dell Premium Optical USB
Internet Speed
DSL 2.85
This is what WhoCrashed had to say:


On Fri 8/3/2012 9:35:38 AM GMT your computer crashed
crash dump file: C:\Windows\Minidump\080312-13634-01.dmp
This was probably caused by the following module: ntoskrnl.exe (nt+0x71F00)
Bugcheck code: 0x50 (0xFFFFF8A00A566000, 0x0, 0xFFFFF8000354B079, 0x0)
Error: PAGE_FAULT_IN_NONPAGED_AREA
file path: C:\Windows\system32\ntoskrnl.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This indicates that invalid system memory has been referenced.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.


On Fri 8/3/2012 9:35:38 AM GMT your computer crashed
crash dump file: C:\Windows\memory.dmp
This was probably caused by the following module: ntkrnlmp.exe (nt!KeBugCheckEx+0x0)
Bugcheck code: 0x50 (0xFFFFF8A00A566000, 0x0, 0xFFFFF8000354B079, 0x0)
Error: PAGE_FAULT_IN_NONPAGED_AREA
Bug check description: This indicates that invalid system memory has been referenced.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem.
The crash took place in the Windows kernel. Possibly this problem is caused by another driver which cannot be identified at this time.



Let me know if you need data from somewhere else.
 

My Computer My Computer

At a glance

Windows 7 Ultimate x64
OS
Windows 7 Ultimate x64
I need the actual report, like you made in your first post.
 

My Computer My Computer

At a glance

Windows 10, Home Clean InstallIntel Core2 processsor Q8200(2.33Ghz 1333FSB)...6 gbATI Radeon 256MB HD3650
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Dell XPS 420
OS
Windows 10, Home Clean Install
CPU
Intel Core2 processsor Q8200(2.33Ghz 1333FSB) Quad Core Tech
Motherboard
Dell
Memory
6 gb
Graphics Card(s)
ATI Radeon 256MB HD3650
Sound Card
Intergrated 7.1 Channel Audio
Monitor(s) Displays
Dell SP2009W 20"
Hard Drives
640 GB Serial ATA Hard drive
Cooling
Fan
Keyboard
Dell USB Keyboard
Mouse
Dell Premium Optical USB
Internet Speed
DSL 2.85
Oh, right. Sorry, I wasn't sure what you were referring to.

Attached.
 

My Computer My Computer

At a glance

Windows 7 Ultimate x64
OS
Windows 7 Ultimate x64

My Computer My Computer

At a glance

Windows 10, Home Clean InstallIntel Core2 processsor Q8200(2.33Ghz 1333FSB)...6 gbATI Radeon 256MB HD3650
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Dell XPS 420
OS
Windows 10, Home Clean Install
CPU
Intel Core2 processsor Q8200(2.33Ghz 1333FSB) Quad Core Tech
Motherboard
Dell
Memory
6 gb
Graphics Card(s)
ATI Radeon 256MB HD3650
Sound Card
Intergrated 7.1 Channel Audio
Monitor(s) Displays
Dell SP2009W 20"
Hard Drives
640 GB Serial ATA Hard drive
Cooling
Fan
Keyboard
Dell USB Keyboard
Mouse
Dell Premium Optical USB
Internet Speed
DSL 2.85
Alright, so after spending all afternoon getting another computer, downloading Memtest, and burning it to a disc, I now find out I can't boot from it.

When the computer is booting and I get the prompt to press F12 for boot menu, it completely ignores my prompts, as it does with any of the other ones (bios, system info, etc). Could the motherboard just be faulty? Could that be what's causing these problems to begin with?
 
Last edited:

My Computer My Computer

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Windows 7 Ultimate x64
OS
Windows 7 Ultimate x64
A faulty MB could cause the memory problems. Your new BSOD reports show memory. Thats all that I can tell you at the present.
 

My Computer My Computer

At a glance

Windows 10, Home Clean InstallIntel Core2 processsor Q8200(2.33Ghz 1333FSB)...6 gbATI Radeon 256MB HD3650
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Dell XPS 420
OS
Windows 10, Home Clean Install
CPU
Intel Core2 processsor Q8200(2.33Ghz 1333FSB) Quad Core Tech
Motherboard
Dell
Memory
6 gb
Graphics Card(s)
ATI Radeon 256MB HD3650
Sound Card
Intergrated 7.1 Channel Audio
Monitor(s) Displays
Dell SP2009W 20"
Hard Drives
640 GB Serial ATA Hard drive
Cooling
Fan
Keyboard
Dell USB Keyboard
Mouse
Dell Premium Optical USB
Internet Speed
DSL 2.85
After a couple of boot attempts, I finally got it to open the boot menu and load up Memtest. It's towards the end of the 4th pass at the moment and has encountered no errors thus far. I'm going to run 8 passes as is suggested and report back when it's done, but it's starting to look like the RAM may not be the problem. Also, it's been running for a few hours now without crashing, so we can probably rule out any power supply related issues as well.

What on God's green earth could possibly be causing this? :confused:
 

My Computer My Computer

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Windows 7 Ultimate x64
OS
Windows 7 Ultimate x64
The reports usually give clues. The last few of yours were quite clear..Memory.

Code:
 Microsoft (R) Windows Debugger Version 6.11.0001.404 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.

Loading Dump File [C:\Users\Richard\AppData\Local\Temp\Temp1_Seven Forums (2) (1).zip\Seven Forums\080312-13634-02.dmp]
Mini Kernel Dump File: Only registers and stack trace are available
Symbol search path is: SRV*c:\symbols*http://msdl.microsoft.com/download/symbols
Executable search path is: 
Windows 7 Kernel Version 7600 MP (4 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Machine Name:
Kernel base = 0xfffff800`0324a000 PsLoadedModuleList = 0xfffff800`03487e50
Debug session time: Fri Aug  3 05:43:19.521 2012 (GMT-4)
System Uptime: 0 days 0:06:49.832
Loading Kernel Symbols
...............................................................
................................................................
............
Loading User Symbols
Loading unloaded module list
......
*******************************************************************************
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
*******************************************************************************
Use !analyze -v to get detailed debugging information.
BugCheck 50, {fffff8a00a566000, 0, fffff80003580079, 0}

Could not read faulting driver name
Probably caused by : memory_corruption ( nt!MiCompressRelocations+70 )
Followup: MachineOwner
---------
 

My Computer My Computer

At a glance

Windows 10, Home Clean InstallIntel Core2 processsor Q8200(2.33Ghz 1333FSB)...6 gbATI Radeon 256MB HD3650
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Dell XPS 420
OS
Windows 10, Home Clean Install
CPU
Intel Core2 processsor Q8200(2.33Ghz 1333FSB) Quad Core Tech
Motherboard
Dell
Memory
6 gb
Graphics Card(s)
ATI Radeon 256MB HD3650
Sound Card
Intergrated 7.1 Channel Audio
Monitor(s) Displays
Dell SP2009W 20"
Hard Drives
640 GB Serial ATA Hard drive
Cooling
Fan
Keyboard
Dell USB Keyboard
Mouse
Dell Premium Optical USB
Internet Speed
DSL 2.85
Ran Memtest for 8 passes. No errors found. What does that mean? Does it mean the RAM definitely isn't faulty?
 

My Computer My Computer

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Windows 7 Ultimate x64
OS
Windows 7 Ultimate x64
Did you take each stick and test it in a slot for 6 passes?
 

My Computer My Computer

At a glance

Windows 10, Home Clean InstallIntel Core2 processsor Q8200(2.33Ghz 1333FSB)...6 gbATI Radeon 256MB HD3650
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Dell XPS 420
OS
Windows 10, Home Clean Install
CPU
Intel Core2 processsor Q8200(2.33Ghz 1333FSB) Quad Core Tech
Motherboard
Dell
Memory
6 gb
Graphics Card(s)
ATI Radeon 256MB HD3650
Sound Card
Intergrated 7.1 Channel Audio
Monitor(s) Displays
Dell SP2009W 20"
Hard Drives
640 GB Serial ATA Hard drive
Cooling
Fan
Keyboard
Dell USB Keyboard
Mouse
Dell Premium Optical USB
Internet Speed
DSL 2.85
Negative. The boot menu working caught me by surprise, and I had both sticks in at the time. I didn't want to risk shutting down to take one out and not be able to boot from the disc again when I start back up.

Does having both in simultaneously provide unreliable results? I assumed testing each stick in each slot was to figure out which stick/slot is causing the problem.
 
Last edited:

My Computer My Computer

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Windows 7 Ultimate x64
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Windows 7 Ultimate x64
No. Sometimes testing all give false results. The test must be done the way that I said. I can, also tell you, I have never seen consistent bad memory results that were not correct. I can also tell you to press down hard on each stick, sometimes they are not set correctly.
 

My Computer My Computer

At a glance

Windows 10, Home Clean InstallIntel Core2 processsor Q8200(2.33Ghz 1333FSB)...6 gbATI Radeon 256MB HD3650
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Dell XPS 420
OS
Windows 10, Home Clean Install
CPU
Intel Core2 processsor Q8200(2.33Ghz 1333FSB) Quad Core Tech
Motherboard
Dell
Memory
6 gb
Graphics Card(s)
ATI Radeon 256MB HD3650
Sound Card
Intergrated 7.1 Channel Audio
Monitor(s) Displays
Dell SP2009W 20"
Hard Drives
640 GB Serial ATA Hard drive
Cooling
Fan
Keyboard
Dell USB Keyboard
Mouse
Dell Premium Optical USB
Internet Speed
DSL 2.85
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