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Windows 7: Irql_not_less_or_equal

14 Oct 2012   #1

Windows 7 Home Premium 64 bit
 
 
Irql_not_less_or_equal

About 8 days ago, after switching on the computer, I got a blue screen with IRQL_NOT_LESS_OR_EQUAL and lots of other information. I had to crash the computer and restart, after which I was given the option to start normally or do a system check (I think). I chose the recommended action (system check) and the computer did its stuff. Thereafter, I was able to start normally. This problem disappeared the next day but has returned today. This time I chose 'start normally' and ignored the recommended setting (system check or similar). The PC is less than a month old and uses Windows 7 Home Premium, 64 bit. Could someone tell me what to do about this please?


My System SpecsSystem Spec
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14 Oct 2012   #2

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium 64Bit
 
 

My System SpecsSystem Spec
15 Oct 2012   #3

Windows 7 Home Premium 64 bit
 
 

Hi Koolkat - thanks for the response. Should I do a complete, kernel or small memory dump?
My System SpecsSystem Spec
.


15 Oct 2012   #4

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium 64Bit
 
 

Small memory dumps
My System SpecsSystem Spec
17 Oct 2012   #5

Windows 7 Home Premium 64 bit
 
 

OK...hope I've attached the SF diagnostic thing properly! By the way, one of the error messages I had was "ERROR No boot isk has been detected or the boot disk has failed." Does this make any difference?

Thanks
My System SpecsSystem Spec
17 Oct 2012   #6

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium 64Bit
 
 

When did you get that error?

Code:
STOP 0x0000000A: IRQL_NOT_LESS_OR_EQUAL  
Usual causes:  Kernel mode driver, System Service, BIOS, Windows, Virus scanner,
 Backup tool, compatibilityBugCheck A, {0, 2, 0, fffff80002eadf74}
Probably caused by : ntkrnlmp.exe ( nt!KiPageFault+260 )
"ntkrnlmp.exe" is not the true cause of your crash but on searching more I found the cause of your problem. Don't be surprised. it's your antivirus.
Code:
Start Menu\Programs\Norton 360	Public:Start Menu\Programs\Norton 360	Public
Code:
fffff880`0306e7b8  fffff880`040adfd8Unable to load image \??\C:\Windows\system32\Drivers\SYMEVENT64x86.SYS, Win32 error 0n2
*** WARNING: Unable to verify timestamp for SYMEVENT64x86.SYS
*** ERROR: Module load completed but symbols could not be loaded for SYMEVENT64x86.SYS
 SYMEVENT64x86+0x21fd8
Code:
fffff880`0306e498  fffff880`045702e0Unable to load image \??\C:\ProgramData\Norton\{0C55C096-0F1D-4F28-AAA2-85EF591126E7}\N360_6.0.0.145\Definitions\BASHDefs\20120928.001\BHDrvx64.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for BHDrvx64.sys
*** ERROR: Module load completed but symbols could not be loaded for BHDrvx64.sys
 BHDrvx64+0x1372e0
Norton is known to cause BSoDs, my suggestion to you is to uninstall it completely including all its components. Use Microsoft Security Essentials instead. It's free, light weight and most compatible with the Windows 7 OS. I'll add more links for you to go through:

Hope it helps!

Run the System File Checker that scans the integrity of all protected Windows 7 system files and replaces incorrect corrupted, changed/modified, or damaged versions with the correct versions if possible:Then run Disk Check on your hard disk for file system errors and bad sectors on it:
Let me know the results and further crashes if any
My System SpecsSystem Spec
17 Oct 2012   #7

Windows 7 Home Premium 64 bit
 
 

Hi - thanks for identifying the problem for me - have now installed Microsoft Security Essentials and uninstalled Norton 360, although I have saved my Norton settings (just in case). I have checked the box for the firewall to be enabled. Should I also instal Malwarebytes or just rely upon MS Security Essentials?

The message "ERROR No boot disk has been detected or the boot disk has failed" appeared after the BSOD.
My System SpecsSystem Spec
17 Oct 2012   #8

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium 64Bit
 
 

You can keep both. They are a great combination.

Are you able to load into windows?
My System SpecsSystem Spec
17 Oct 2012   #9

Windows 7 Home Premium 64 bit
 
 

Hi again. I have now completed all the items you suggested. Scannow found no problems and neither did the CHKDSK. I can't say yet whether the original problem has disappeared as it was intermittent - most times I could boot up the computer without the BSOD appearing. There was a gap of about eight days between the first and second set of occurrences of the BSOD, so it might be some time before I know for sure. If it does recur, I'll get back to you.

Many thanks for all your help.
My System SpecsSystem Spec
17 Oct 2012   #10

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium 64Bit
 
 

Oh Okay, I get you now.
You can observe for a week or so to be sure. Keep us posted either way. See you soon
My System SpecsSystem Spec
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