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Windows 7: BSOD anytime, doing anything (including idle)

02 Apr 2015   #1
ryanjohnclark

Windows 7 Home Premium 64 bit
 
 
BSOD anytime, doing anything (including idle)

I've been getting BSOD's for the past month or so now, and it's slowly getting worse. A friend of mine has helped me eliminate software issues (killdisk, then reinstall windows). The stated cause on the BSOD range from 'Iirql_not_less_or_equal' to 'bad_pool_header' to 'memory_management' and more besides. Attached is the Dm log .zip file. Thanks


My System SpecsSystem Spec
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02 Apr 2015   #2
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

Code:
BugCheck 50, {fffff8a40d9fab40, 0, fffff80003211b23, 5}

*** WARNING: Unable to verify timestamp for aswSnx.sys
*** ERROR: Module load completed but symbols could not be loaded for aswSnx.sys

Could not read faulting driver name
Probably caused by : Pool_Corruption ( nt!ExDeferredFreePool+257 )

Followup: Pool_corruption
---------
Uninstall Avast using Avast Uninstall Utility. Use Microsoft Security Essentials as your antivirus with windows inbuilt firewall, and free MBAM as the on demand scanner.

Let us know for any further BSOD.
My System SpecsSystem Spec
03 Apr 2015   #3
ryanjohnclark

Windows 7 Home Premium 64 bit
 
 

Will do. Just a point to note, before the computer was wiped, I wasn't using Avast. My computer showed BSOD's less than 24 hours after the killdisk (only windows, headset and speaker drivers, DOTA 2 and Avast along with driver updates had been installed)
My System SpecsSystem Spec
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05 Apr 2015   #4
ryanjohnclark

Windows 7 Home Premium 64 bit
 
 

Alright.... Still BSOD.... This time citing memory management
My System SpecsSystem Spec
05 Apr 2015   #5
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

Quote   Quote: Originally Posted by ryanjohnclark View Post
Alright.... Still BSOD.... This time citing memory management
Blue Screen of Death (BSOD) Posting Instructions
My System SpecsSystem Spec
05 Apr 2015   #6
ryanjohnclark

Windows 7 Home Premium 64 bit
 
 

Sorry yeah, my mistake
My System SpecsSystem Spec
05 Apr 2015   #7
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

The new crash dump says nothing other than it is somehow memory related. It may be the physical RAM, it may be any driver passing bad info to the memory. Let us check both the possibilities.

Test your RAM modules for possible errors.
How to Test and Diagnose RAM Issues with Memtest86+
Run memtest86+ for at least 8 consecutive passes.

If it start showing errors/red lines, stop testing. A single error is enough to determine that something is going bad there.

If it does not show any error, enable Driver Verifier to monitor the drivers.
Driver Verifier - Enable and Disable
Run Driver Verifier for 24 hours or the occurrence of the next crash, whichever is earlier.

information   Information
Why Driver Verifier:
It puts a stress on the drivers, ans so it makes the unstable drivers crash. Hopefully the driver that crashes is recorded in the memory dump.

How Can we know that DV is enabled:
It will make the system bit of slow, laggy.

warning   Warning
Before enabling DV, make it sure that you have earlier System restore points made in your computer. You can check it easily by using CCleaner looking at Tools > System Restore.

If there is no points, make a System Restore Point manually before enabling DV.

Tip   Tip

Let us know the results, with the subsequent crash dumps, if any.
________________________________________
Code:
BugCheck 1A, {41790, fffffa8006063810, ffff, 0}

Probably caused by : ntkrnlmp.exe ( nt! ?? ::FNODOBFM::`string'+35084 )

Followup: MachineOwner
---------
My System SpecsSystem Spec
06 Apr 2015   #8
ryanjohnclark

Windows 7 Home Premium 64 bit
 
 

Adding my dm log file, unsure if I need to at this point (but have done to be sure)....
I ran the memtest and within 1-2 minutes, my screen was filled with reams of red. Not sure what to do next, hoping you guys can help.
My System SpecsSystem Spec
07 Apr 2015   #9
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

Quote   Quote: Originally Posted by ryanjohnclark View Post
I ran the memtest and within 1-2 minutes, my screen was filled with reams of red. Not sure what to do next, hoping you guys can help.
Now follow the "Part 3: If You Have Errors:" of How to Test and Diagnose RAM Issues with Memtest86+

Errors/red lines means one or more RAM is faulty. But the fault may occur due to a faulty DIMM slot, too, which is a motherboard component. Using memtest86+, you can discriminate between a faulty RAM and a faulty motherboard.

How? Say you have two RAM sticks and two DIMM slots. You obtained errors at the test with all RAM sticks installed. Now, remove all the sticks but one. Test it in all the available slots, one by one. Continue the same procedure for all the available sticks.
How to make the inference that is it a RAM issue or it is a motherboard issue? Suppose you have got the result like that:
testSlot1Slot2
RAM1ErrorError
RAM2GoodGood
It is a RAM, a bad RAM.

But if you have got a result like that:
testSlot1Slot2
RAM1ErrorGood
RAM2ErrorGood
It is a motherboard issue. The particular slot is bad.

If it is a bad RAM, you need to change the RAM. Take the other existing (good) RAM to the shop and get one of the exactly same specification. The best is, get a totally new RAM KIT.

If it is a bad slot, it is a motherboard issue. But changing the motherboard needs a preparation for most of us; so dont populate that slot for the time being.

No bugcheck analysis is needed until the RAM issue is fixed.
My System SpecsSystem Spec
07 Apr 2015   #10
ryanjohnclark

Windows 7 Home Premium 64 bit
 
 

Sorry about that, step 3 was on there, but I just jumped the gun a little thanks for all your help so far, I'll let you know what happens next
My System SpecsSystem Spec
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 BSOD anytime, doing anything (including idle)




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