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Windows 7: Random BSoDs, mostly ntosknl.exe+7cc40


29 Oct 2011   #1

Win7HPx64
 
 
Random BSoDs, mostly ntosknl.exe+7cc40

Hi,

I was wondering if anyone might be kind enough to have a look at the crash files that I get from my PC.

My PC is running Win7HPx64. It is about 18 months old. The OS was full-retail. The BSODs started around October 2010, for no obvious reason. Now I am getting them up to 3-4 times a day, and then none for a week at a time.

I have already done thorough scans of the HDD, RAM and driver updates with no progress.

Any thoughts would be much appreciated!

Jon

My System SpecsSystem Spec
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29 Oct 2011   #2

Windows 7 Ultimate 64bit SP1
 
 

Hi.

In this order,

Remove comodo from your system.


Remove avast from your system.


Dont install 2 antivirus\security in the same system you cause bsod.


Download and install Anti-Malware, Virus, Spyware Protection | Microsoft Security Essentials


Run SFC /SCANNOW Command - System File Checker you may need to run it 2-3 times to "fix" everything.

Run RAM - Test with Memtest86+


Finish with the above steps and post back with any results.
My System SpecsSystem Spec
29 Oct 2011   #3

Win7HPx64
 
 

Hi,

Ok, I see. I had Comodo as the firewall, and Avast as the anti-virus so was not aware of any duplication. Anyway, I have uninstalled them both.

I also went to install MSE, only to find that it was already installed (and apparently functioning) which is a little odd, as I recall I have had to specifically disable aspects of it before to avoid reported conflicts.

I tried running sfc /scannow but it says 'you must be an administrator running a console session to use the sfc utility'. Well it is my PC and mine alone and I don't understand what that means.

Apologies, I'm not techie.
My System SpecsSystem Spec
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30 Oct 2011   #4

Windows 7 Ultimate 64bit SP1
 
 

Uninstall mse and download and install the most recent version

Anti-Malware, Virus, Spyware Protection | Microsoft Security Essentials

For the sfc /scan now,right click on it and choose run as administrator.
My System SpecsSystem Spec
30 Oct 2011   #5

Win7HPx64
 
 

Hi,

I have MSE installed now, and fully up to date.

I also worked out how to run SFC from the Command Prompt as Administrator (google brings you to explanations as to how to, posted on these very forums by Brink).

I ran it three times. The first time is stopped at 10% verification saying 'Windows Resource Protection could not perform the requested operation'. The next two runs were fine with nothing reported.

I'll run Memtest tonight overnight. I'm pretty confident it'll be ok as I ran it 2-3 times a few weeks back and there were no issues to report.

It might be false hope, but I haven't had a BSOD since uninstalling Avast/Comodo. We'll see, I didn't get a BSOD for several days recently after updating the video driver, and thought then too that it might just have been the fix.

I'll revert!
My System SpecsSystem Spec
30 Oct 2011   #6

Windows 7 Ultimate 64bit SP1
 
 

So far so good.

The memtest is an extra test to ensure that everything is working fine.
My System SpecsSystem Spec
06 Nov 2011   #7

Win7HPx64
 
 

Ok well it has been about a week, and time for an update.

As mentioned the system seemed stable for 2-3 days, but now I am getting BSoDs again, currently averaging one a day.

Six of eight of these have been Ntosknl.exe errors, the others NTFS.sys and MpFilter.sys.

Is there a way I can zip up say the last week's minidump reports and post them here, rather than post the whole large file again? Or does anyone have a better idea?

Thanks
My System SpecsSystem Spec
07 Nov 2011   #8

Windows 7 Ultimate 64bit SP1
 
 

Yes,got to C:\windows\minidumps find the most recent minidumps,zip and upload them here.
My System SpecsSystem Spec
07 Nov 2011   #9

Win7HPx64
 
 

Ok thx,

Please see attachment.

Thanks.
My System SpecsSystem Spec
07 Nov 2011   #10

Windows 8.1 Pro x64
 
 

Quote:
I ran it three times. The first time is stopped at 10% verification saying 'Windows Resource Protection could not perform the requested operation'. The next two runs were fine with nothing reported.
I would suggest a Repair Install
Since SFC could not proceed any further it could mean that some system files were corrupt

Run a scan of Malwarebytes
My System SpecsSystem Spec
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 Random BSoDs, mostly ntosknl.exe+7cc40




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