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Windows 7: bsod - Worker_thread_returned_at_bad_iqrl - occurence - DL/browsing

08 Dec 2012   #1

Windows 7 64 bit
bsod - Worker_thread_returned_at_bad_iqrl - occurence - DL/browsing

Hi all,

having continuing bsod occuring now 2-3 times a day need to sort it out, here's the background.

recently changed my OS to Windows 7 64 bit from Vista 32 bit (no bsod incident with vista)

my system specs were checked and is compatible with Windows 7 64 bit,the up date was successful.

But i have suscpicions of out dated drivers that are hampering game play specifically Third Age: Total War mod for Kingdoms Total War i tried everything on their troubleshooting list and nothing worked.

i tried an attempt to update my drivers and again i have a suscpicion i did something wrong particularly with my sound card which seems to have aggrevated the bsod.

other incidents;

1. any time i want to download a torrent with utorrent i get bsod.

2. sometimes generally browsing or when idle and screensaver active, i return i get a bsod.

3. downloading patches for game specifically starcraft 2, aftering re-installing after the OS change the large patch file 2 mins in i get a bsod.

thats it i think...

a solution i'm looking for is a fix to the constant bsod, and a way of getting my system back up to date with drivers. Please help!

My System SpecsSystem Spec
08 Dec 2012   #2

Microsoft Community Contributor Award Recipient

Windows 10 Home 64Bit

Welcome to sevenforums

No dump files,... Follow: Dump Files - Configure Windows to Create on BSOD

  1. Start Menu\Programs\Advanced SystemCare 6 Public:Start Menu\Programs\Advanced SystemCare 6 Public
  2. Start Menu\Programs\Glary Utilities Public:Start Menu\Programs\Glary Utilities Public
  3. Start Menu\Programs\McAfee Public:Start Menu\Programs\McAfee Public
  4. Start Menu\Programs\Smart Defrag 2 Public:Start Menu\Programs\Smart Defrag 2 Public
McAfee is a frequent cause of BSOD-s (specially in the situation you describe). Consider uninstalling it with the McAfee Removal Tool and replace with Microsoft Security Essentials at least to test.MSE is recommended from a strict BSOD perspective, compatibility & stability compared to other antiviruses/internet security software:-
1. Microsoft Security Essentials - Free Antivirus for Windows
2. Malwarebytes - Free
3. Good and Free system security combination.
Do not start the free trial of Malware Bytes; remember to deselect that option when prompted.

Run a full scan with both (separately) once downloaded, installed and updated.

PS: I notice that you already have MSE & MBAM which is a great combination. + Running two antiviruses would conflict. :: is it bad to run multiple antivirus programs?

Uninstall - 1. Advance System Care 2. Smart Defrag 2 3. Glary utilities; with the free version of Revo uninistaller. Uninstall using Advanced Mode and reboot the desktop/laptop if prompted.
These tools can be a cause of BSOD's. The windows 7 operating system does not require these registry cleaning software. They often tune-down rather than tune-up and can wreck the OS beyond repair. Microsoft have improved Windows 7 significantly and it is much better at organising and optimising itself than its predecessors. Check this, this and this thread for evidence.

If you feel the need to use a registry cleaning or optimisation software, most of us recommend the use of CCleaner but make sure you back up the registry before making letting ccleaner delete anything. You may make use of the great in-built Disk Cleanup and Extended Disk Cleanup if required to do so, regarding de-frag utilities, I recommend yet again the in-built Disk Defragmenter - Open and Use & Puran Defrag which is much reliable compared to others.

Run the System File Checker. It allows the user to scan for and restore corruptions in Windows system files.
  • 1. Click on the
    2. Type CMD on Search
    3. Left click and Run as Administrator
    4. Type SFC /scannow
Full tutorial here:

Run Disk Check on your hard disk for file system errors and bad sectors on it:

Free up the start-up, nothing except the antivirus is usually needed.

Make scans with the following:

-Kaspersky TDSSKiller-ESET online scanner

Check a new version for your BIOS:
BIOS Version/Date	Dell Inc. A05, 03/01/2008
Post back results.
My System SpecsSystem Spec
08 Dec 2012   #3

Windows 7 64 bit

will do - quick question - i thought i did do a dump file i already looked at that link before i did SF Diagnostic tool and did the attachment.

for clarity is it kernel or mini that is required?

also do you need any system info?
My System SpecsSystem Spec

08 Dec 2012   #4

Microsoft Community Contributor Award Recipient

Windows 10 Home 64Bit

Small - Mini dump.

And you have put in your specs, I can see them. If I need more I will let you know
My System SpecsSystem Spec
08 Dec 2012   #5

Windows 7 64 bit


Generally - comp already seems better performing and faster at browsing


1. Remove Mcafee with programs unistaller and mcafee unistaller - done

2. MSE - updated scanned and running - Done (3 objects found)

3. MBAM - updated (kept the copy i had) and run scan - Done (nothing found)

4. unistalled/removed Glary, advance system care, defrag 2 with Revo unistaller, restarted - done

5. run system file checker - no issues files fine - done

6. run disk check - restart/successful - done

7. free up start-up process - done

8. TDSSKiller - scan - done (nothing found)

9. in the processes of ESET scan now

10. checked bios on dell website [attached screen grab] honestly i havent visited this page that often should i do all urgent and recommended, for all of them?

and attached is a mini dump file i hope!

thanks for the help? would these dell drivers most likely sort my gaming issue?

My System SpecsSystem Spec
08 Dec 2012   #6

Microsoft Community Contributor Award Recipient

Windows 10 Home 64Bit

Go for the urgent one.

I've checked the zip, did you get a BSOD again? During or after making the changes to your system?
There are no dump files

One more snip, Summary tab of Speccy:
My System SpecsSystem Spec
08 Dec 2012   #7

Windows 7 64 bit

nope haven't had a bsod i just thought that running another report with the mini dump on will show you what you needed, ma bad

i'll let you know if i encounter any bsod

whats speccy for i've got it, got the summary just does the same as CPUID no??
My System SpecsSystem Spec
08 Dec 2012   #8

Microsoft Community Contributor Award Recipient

Windows 10 Home 64Bit

Yes. I just wanted to see the temperatures
My System SpecsSystem Spec
08 Dec 2012   #9

Windows 7 64 bit

CPU 47 C
Graphics 81 C

btw the patch load for starcraft 2 is running fine now
My System SpecsSystem Spec
08 Dec 2012   #10

Microsoft Community Contributor Award Recipient

Windows 10 Home 64Bit

81 C is rather high.. Have you cleared dust inside the case? BTW is this a laptop or desktop..
My System SpecsSystem Spec

 bsod - Worker_thread_returned_at_bad_iqrl - occurence - DL/browsing

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