IRQL_less_than_or_not_equal errors

Squidmaster

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Jul 26, 2004
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Over the past week I have begun getting Windows blue screens with the "IRQL_not_less_or_equal" error. I have tried to find out about this error online, but beyond the basic, non-specific symptoms, the information gets extremely technical. Can I get some help on this?

Here are the last 2 blue screen sets of data. Both happened within about a day of each other.

Blue screen 1:
STOP: 0x0000000A (0x00000000, 0x00000002, 0x00000001, 0x805226F8)

Blue screen 2:
STOP: 0x00000077 (0xC0000185, 0xC0000185, 0x00000000, 0x0586A000)

After blue screen #2 (last night, and it sat on that screen for about 8 hours as I was asleep), a soft reboot did not post. I then did a hard reset, which also did not post. The 2nd hard reset posted and I'm using my computer as if nothing is wrong, only with the knowledge that I will get more of these screens in the days to come.

An interesting note after the 2nd screen that I recorded is that the in-Windows debugging info listed the same codes as blue screen #1 even though the info was different on the actual blue screen. I imagine all of these are due to the same issue, but I don't know what that issue is.

A couple relevant points:

The first blue screen (not recorded above) happened about a week ago. I did not record this one as it had not occurred before, but I think it mentioned video drivers in there somewhere, because my first instinct when I recovered from the error was to run Windows Update and get a new display driver, which was available. The two errors listed above have happened since that upgrade. None of the hardware nor drivers in my machine have been touched for months leading into this issue, which started before the video driver update anyway. Windows has done some updates on its own at shutdown and that is it.

These screens have happened generally after the system has been on for hours, though that may be random chance. I had iTunes running during 2 of them but not during another, which occurred while I was backing up data in lieue of the issue.

Each time I have ultimately been able to recover into Windows. All but one of the times, Windows has given me the "Windows has recovered from a serious error" message, which then points me to very vague information that isn't entirely helping me here. One of the times, Windows just started as normal with no error reporting of any kind.

My Windows installation is a holdover from a couple years ago, and I have added almost entirely new hardware since that time, including the motherboard. Since Windows continued to operate and my health is horrible, I just continued using it as is.

What should I do? I am considering uninstalling my video driver completely and reinstalling it via Windows Update. Is this the best opening move? Ultimately I could reinstall my OS but, as stated, my health is terrible and I would prefer to do the simplest things first.

Thanks for your time.
 

lxskllr

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Nov 30, 2004
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You can try re-installing your video driver. Also test your ram with Memtest64+
 

Squidmaster

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Jul 26, 2004
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I just did a virus scan. It was negative, but revealed two disturbing tidbits listed below.
  • C:\WINDOWS\$hf_mig$\KB956390-IE7\SP2QFE\advpack.dll - Unable to scan: The system cannot read from the specified device
  • C:\WINDOWS\system32\DEFAULT.ECW - Unable to scan: The file or directory is corrupted and unreadable
Could these be at the root of the problem. Either way, how do I repair these?
 

lxskllr

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Nov 30, 2004
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The second entry appears to be related to Creative drivers. Maybe try reinstalling those. I'm still looking up the first entry.
 

bsobel

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Dec 9, 2001
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Run checkdisk on that drive, is possible its related to the crash or the crash corrupted some NTFS metadata. You should not be receiving those errors during the scan.

 

Squidmaster

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Jul 26, 2004
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I had a sound blaster sound card in this computer 6 months ago, but it was removed when I rebuilt the system. I suppose it could be a holdover that didn't uninstall with everything else.

I will run checkdisk in a couple hours. Right now I need to wind down a little bit. I'm not built for this sort of stress these days. :(

A big part of me wants to just scrap my OS and reinstall it, but I don't want to do this until I am certain software is to blame, and I'd like to address the problem independently first anyway. OS reinstalls are a pretty big investment.
 

MadAmos

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Sep 13, 2006
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I have found a substantial number of this type of error are due to faulty RAM. I would start with running memtest86 overnight or at least 3-4 full passes and see if there are any errors.
 

Squidmaster

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Jul 26, 2004
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Would faulty RAM take 5 months to reveal itself, or does it go bad at times or what exactly? I will try to run this test overnight if I can. I have to install something to be able to burn CDs again it appears in order to run memtest.
 

MadAmos

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Sep 13, 2006
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+1 imgburn, if you have a floppy drive it will run from a bootable floppy as well.
I have seem RAM just suddenly start throwing errors at any time, if the system is overclocked it is worth trying the default setting or optimized if available in the BIOS.
 

Squidmaster

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Jul 26, 2004
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I planned to run checkdisk while I was eating dinner tonight, but all that happens is that it gets to the end of phase 1 and says it was unable to complete the disk check. Is this because it is the OS disk and it is in use? How can I check this disk if not in Windows?
 

lxskllr

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Nov 30, 2004
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I right click my drive, pick Properties/Tools/Error Checking... tick boxes to automatically fix file system errors, and scan for and attempt recovery of bad sectors. It'll then tell you it can't do it now, and ask if you want to do it at next startup. Pick yes, then reboot your machine. Chkdsk will then run.
 

Squidmaster

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Ah, so the key is checking those boxes. I was just having it do a scan without any fixes to start. I'll try your way in a couple hours.
 

Squidmaster

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Jul 26, 2004
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Here's a significant update.

I loaded World of Warcraft and heard an error message at the end of the loading screen. This happened last night as well, at which point I discovered control-alt-delete, alt-F4, and alt-tab were useless, so this time I did a "reset key" reboot. The system then informed me it needed to run checkdisk. It found 3 problems and did the following:

Corrected a minor error in file 20729
Deleted corrupt attribute record (-1593835504, "")
Deleted index entry DEFAULT.ECW in index $I30 of file 29

Interesting stuff, eh?

Do you think this might solve my problems or would this be a sort of secondary issue brought about by the blue screen shutdowns themselves?
 

lxskllr

No Lifer
Nov 30, 2004
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My guess is it's caused by the BSODs. Don't forget to check your memory tonight before you go to bed...
 

AlexWade

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Sep 27, 2003
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If you are having problems POST-ing, I would start with a BIOS update if one is available. Then I would suspect your motherboard could be dying. But the memory or hard drive can be dying too. I would backup the critical data right away.

Did you run chkdsk yet? STOP 0x7A means Windows failed at some kernel page request. Once your data is safely backed up, there are a couple of other things to check. Try a new hard drive cable. Free up some hard drive space. Make sure the root folder is not full of many unnecessary files. Defragment the hard drive. Scan for malware using Malware Bytes and also scan for a rootkit. www.sysinternals.com has a good rootkit program. Uninstall any antivirus program.

Finally, here are 3 Microsoft KB articles.
http://support.microsoft.com/kb/818501/en-us/
http://support.microsoft.com/kb/310918/en-us/
http://support.microsoft.com/kb/837384/en-us/
 

Squidmaster

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I only had trouble POSTing the one time. That may have just been due to letting go of the button too soon and not having the memory clear or something, because all the other times that part works ok.
 

Squidmaster

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Jul 26, 2004
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New info:

I just installed the WD diagnostic tool. It shows the OS drive (800JD) as failing the SMART status due to the "reallocated sectors" category, which reads 117. I'm gonna run a full diagnostic now and see if it turns up anything else. This would be about the best problem to have since I have full backups and a newer drive in the computer already.
 

Squidmaster

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A day and a half after the long test (which showed normal), I've had no crashes. Maybe the drive corrections saved the day. Either way it looks like that drive may not be long for this world.
 

Squidmaster

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Jul 26, 2004
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Ok, a week and a half went by with no errors, and now I'm getting them again. I got 3 within the past 24 hours in fact despite reinstalling my video and audio drivers. I was unable to figure out how to reinstall my motherboard drivers or I would have done that as well.

The latest message was a PFN LIST CORRUPT instead of the IRQL issue, which happened earlier in the same day. I can provide the hex codes if they can prove helpful.

I ran the event viewer and see lots of Event 7023 errors from within about a minute earlier in the evening, like the one copied below:

Event Type: Error
Event Source: Service Control Manager
Event Category: None
Event ID: 7023
Date: 12/27/2008
Time: 12:08:08 AM
User: N/A
Computer: ANDY
Description:
The Application Management service terminated with the following error:
The specified module could not be found.

The offending file seems to be netevent.dll

It would not surprise me if these events are simply my computer not knowing what a PCI device was and me canceling the install several times until I worked out my audio drivers.

I'm getting in way over my head here, and I don't know what to do. Can you help?
 

RebateMonger

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Dec 24, 2005
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Originally posted by: Squidmaster
I just installed the WD diagnostic tool. It shows the OS drive (800JD) as failing the SMART status due to the "reallocated sectors" category, which reads 117. I'm gonna run a full diagnostic now and see if it turns up anything else. This would be about the best problem to have since I have full backups and a newer drive in the computer already.
Reallocated Sectors means that there's been a physical problem reading the hard drive and the bad spot has been removed from service. This isn't a good sign. Consider replacing the hard drive.
 

VirtualLarry

No Lifer
Aug 25, 2001
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I got PFN_LIST_CORRUPT and IRQL_LESS_THAN_OR_EQUAL errors on a Gigabyte i865G chipset mobo, they went away after I put active cooling on the northbridge.
 

Squidmaster

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Jul 26, 2004
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Wow, really? How did you manage that? Would it help for me to test it with the case open on the side or something like that?
 

techmanc

Golden Member
Aug 20, 2006
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I find a lot of these errors can be a hardware conflict. They wont show up most of the time as a problem using device manager system information which are still good place to see if any conflicts show. Have you added any hardware or device software or even rearranged hard drives or other peripherals?
 

Squidmaster

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Jul 26, 2004
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I haven't added anything since the errors started, but I have been leaving the computer on overnight to play Christmas music. Given that all the errors occur after the system has been on for many hours, I would not be stunned if the heat issue might be the correct diagnosis.

Windows has done some updates I would imagine, so that could present a possible software conflict. My plan is to reinstall Windows fairly soon, maybe do a bios update as well, and then see what happens. For now I'm leaving my case open to test that angle until I can get some help on the reinstall.

Sound like a good plan?