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Windows 7: Random BSOD in Win7

24 Nov 2009   #1

Windows 7 Ultimate x64
Random BSOD in Win7

every once in a while I'll get a BSOD randomly. I haven't been able to associate it with any software or action. IRQL_NOT_LESS_OR_EQUAL is the error I get. the last BSOD I woke up to and it seemed to have scrolled down the page past the error code so I'm not sure if it was the same. I have upgraded my video driver and pulled an unused PCI card in efforts to solve. I've also installed and attempted to gather some helpful info from the dmp files. I feel that someone with some more experience might be able to do this better though and pull some useful info. I've included the dumps from my last 6 bsods along with the xml from the most recent. can someone take a look at these for me and see if there's any consistencies or some potential link to what's causing the issue?

also I ran a full memory test today, no errors

AMD Phenom II x3 720 BE
Gigabyte MA-770T-UD3P

My System SpecsSystem Spec
24 Nov 2009   #2

7600.20510 x86


I see that you have OCZ ram. Visit OCZ's site and find the correct timings and Vdimm (voltage) for them. Then adjust the bios accordingly.

Update these drivers too (or uninstall them along with the associated apps if they're unimportant to system functioning). Google to find out what they are:

speedfan speedfan.sys Sun Sep 24 09:26:48 2006 <<probably app should be uninstalled
Ultra Ultra.sys Fri Jul 28 00:01:47 2006 <<probably for Promise card

Update the motherboard chipset drivers.

Let us know how it goes and post another crash dump if it happens. Good luck.
My System SpecsSystem Spec
24 Nov 2009   #3

Windows 7 Ultimate x64

thanks for the reply torrentg I updated speedfan to the latest version, I use it to monitor temps so I don't want to get rid of it the ultra driver was for the pci card that I pulled so it shouldn't matter anymore, but I did uninstall/remove the driver anyways I updated sound / lan drivers. I've had a bit of trouble with the sound before so it might've had something to do with that I also installed north bridge filter and AMD usb filter drivers but win7 seems to have had an issue with them as it ran an auto repair after restarting and it seems they're no longer installed I only get the BSOD every once in a great while (week or 2) so I'll just have to wait and see, thanks for the info!

Edit: scratch that, the issue was removing that ultra driver, not the usb/bridge driver installs. I told it to delete it but it just ended up corrupting it somehow. manually removed it then readded the USB filter driver. installing the north bridge filter doesn't seem to stick. seems that's cuz I already have an appropriate one installed.

so as I said, will just have to see if any of that fixes it!
My System SpecsSystem Spec

06 Dec 2009   #4

Windows 7 Ultimate x64

another BSOD today: BAD_POOL_HEADER

dump file attached

I see other forums / posts suggesting this and the IRQ BSOD may be related
plz let me know what you guys think
My System SpecsSystem Spec
06 Dec 2009   #5

7600.20510 x86

You could install the latest nForce 15.51 drivers to see if it helps any.

download from

Also visit NVIDIA's site for latest video card driver.

And update this driver too:

point64k point64k.sys Thu Dec 04 04:47:58 2008
My System SpecsSystem Spec
06 Dec 2009   #6

Windows 7 Ultimate x64

NVIDIA Windows Software - InstallShield Wizard
The NVIDIA Setup program could not locate any drivers that are compatible with your current hardware. Setup will now exit.
my chipsets are AMD, I've d/led and installed the latest drivers on those.
I had originally updated my vid drivers as one of the first things when I started getting BSODs
there's a new set again though so those are now updated
lastly I assume that's my mouse driver so I'll check MS site and see if there's a newer version
will post again if any more bsod's
thnx again for the help
My System SpecsSystem Spec
06 Dec 2009   #7

7600.20510 x86

Never download drivers from Microsoft. They tend to mess systems up. Always from the manufacturers' websites.
My System SpecsSystem Spec
06 Dec 2009   #8

Windows 7 Ultimate x64

lol, the mouse is a MS mouse =)
My System SpecsSystem Spec
06 Dec 2009   #9

7600.20510 x86

Ah...alright then. That's a different story because they actually make the drivers for that themselves. lol
My System SpecsSystem Spec
07 Dec 2009   #10
Microsoft MVP


Info on the STOP 0x19: BAD_POOL_HEADER error: BSOD Index

Two different creatures - the first is due to Pool issues, while the second is due to IRQL issues. It's possible that the same driver could cause both issues tho' - so it's best to troubleshoot them together.

I specifically recommend Driver Verifier whenever I see a POOL problem, due to Driver Verifier's ability to stress the POOL. Please run it by following these directions:
Using Driver Verifier is an iffy proposition. Most times it'll crash and it'll tell you what the driver is. But sometimes it'll crash and won't tell you the driver. Other times it'll crash before you can log in to Windows. If you can't get to Safe Mode, then you'll have to resort to offline editing of the registry to disable Driver Verifier.

So, I'd suggest that you first backup your stuff and then make sure you've got access to another computer so you can contact us if problems arise. Then make a System Restore point (so you can restore the system using the Vista Startup Repair feature).

Then, here's the procedure:
- Go to Start and type in "verifier" (without the quotes) and press Enter
- Select "Create custom settings (for code developers)" and click "Next"
- Select "Select individual settings from a full list" and click "Next"
- Select everything EXCEPT FOR "Low Resource Simulation" and click "Next"
- Select "Automatically select unsigned drivers" and click "Next"
If no drivers show up, then select "Select driver names from a list" and click "Next"
Then select all drivers NOT provided by Microsoft and click "Next"
- Select "Finish" on the next page.

Reboot the system and waitfor it to crash to the Blue Screen. Continue to use your system normally, and if you know what causes the crash, do that repeatedly. The objective here is to get the system to crash because Driver Verifier is stressing the drivers out.

Reboot into Windows (after the crash) and turn offDriver Verifier by going back in and selecting "Delete existing settings" on the first page, then locate and zip up the memory dump file and upload it with your next post.

If you can't get into Windows because it crashes too soon, try it in Safe Mode.
If you can't get into Safe Mode, try using System Restore from your installation DVD to set the system back to the previous restore point that you created.
If that doesn't work, post back and we'll have to see about fixing the registry entry off-line.

More info on this at this link: Using Driver Verifier to identify issues with Windows drivers for advanced users
My System SpecsSystem Spec

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