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This is a discussion on BSOD - IRQ NOT LESS OR EQUAL within the BSOD, App Crashes And Hangs forums, part of the Tech Support Forum category. Hi! I have been browsing for some answers regarding my blue screen problem but came up empty since there are

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Old 11-08-2014, 05:04 AM   #1
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Join Date: Nov 2014
Posts: 1
OS: Windows 7 Ultimate x64

I have been browsing for some answers regarding my blue screen problem but came up empty since there are countless examples of different BSODs. So i decided to post here in hopes to get some help. I recently bought a new PSU (Corsair CX750) because i wanted to crossfire my 2 ATI Radeon HD 5850 (1st is ATI, 2nd is XFX). I got my PC working like a charm and there was no problem until I had to take out one of my GPUs (XFX) to use it in a different PC. The other PC works fine, but mine unfortunately does not. Since I took the XFX out, I have been getting BSODs. I have had experience with BSODs before but my solution was always reinstalling Windows. This time I am really interested in fixing this issue without reinstalling the OS (if possible).

OS: Windows 7 Ultimate 64-bit
Motherboard: Abit AW9D-MAX (Intel i975-ICH7)
CPU: Intel Core 2 Quad Q6600 @ 2.4Ghz
RAM: 8,00GB Dual-Channel DDR2 @ 408Mhz (5-5-5-15)
HDD: 569GB Western Digital WDC WD6400AAKS-07A7B0 (SATA2)

This is the error I got when i rebooted after the BSOD:

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7600.
Locale ID: 1050

Additional information about the problem:
BCCode: a
BCP1: 0000080000000000
BCP2: 0000000000000002
BCP3: 0000000000000001
BCP4: FFFFF80003106132
OS Version: 6_1_7600
Service Pack: 0_0
Product: 256_1

I also attached the "files that help describe the problem". (dmp and xml)

Thanks in advance!
Attached Files
File Type: rar 110814-22625-01.rar (21.0 KB, 44 views)
File Type: rar WER-24078-0.sysdata.rar (8.2 KB, 36 views)
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Old 11-09-2014, 03:42 AM   #2
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OS: W8.1 x64



This indicates that Microsoft Windows or a kernel-mode driver accessed paged memory at DISPATCH_LEVEL or above.

3: kd> .trap 0xfffff8800890af60
NOTE: The trap frame does not contain all registers.
Some register values may be zeroed or incorrect.
rax=000000000890b2d8 rbx=0000000000000000 rcx=fffff8800890b1a8
rdx=0000080000000000 rsi=0000000000000000 rdi=0000000000000000
rip=fffff80003106132 rsp=fffff8800890b0f0 rbp=fffff8800890b180
 r8=fffff88002fd5180  r9=0000000000000000 r10=fffff800032ff840
r11=0000058000000000 r12=0000000000000000 r13=0000000000000000
r14=0000000000000000 r15=0000000000000000
iopl=0         nv up ei ng nz na po nc
fffff800`03106132 48890a          mov     qword ptr [rdx],rcx ds:00000800`00000000=????????????????
On the faulting instruction, there was a failure setting the memory at address rdx to rcx. As this is a minidump, we cannot dump the contents of these registers to see whether or not they were valid. I can see just from a first glance however that rdx is likely invalid with an address of 0000080000000000.


1. Update to Service Pack 1 ASAP - Learn how to install Windows 7 Service Pack 1 (SP1)

2. Enable Driver Verifier as I am curious to see if these drivers from 2007 are playing a role in the crashes:

Driver Verifier:

What is Driver Verifier?

Driver Verifier monitors Windows kernel-mode drivers, graphics drivers, and even 3rd party drivers to detect illegal function calls or actions that might corrupt the system. Driver Verifier can subject the Windows drivers to a variety of stresses and tests to find improper behavior.

Essentially, if there's a 3rd party driver believed to be causing the issues at hand, enabling Driver Verifier will help us see which specific driver is causing the problem.

Before enabling Driver Verifier, it is recommended to create a System Restore Point:

Vista - START | type rstrui - create a restore point
Windows 7 - START | type create | select "Create a Restore Point"
Windows 8/8.1 - Restore Point - Create in Windows 8

How to enable Driver Verifier:

Start > type "verifier" without the quotes > Select the following options -

1. Select - "Create custom settings (for code developers)"
2. Select - "Select individual settings from a full list"
3. Check the following boxes -
- Special Pool
- Pool Tracking
- Force IRQL Checking
- Deadlock Detection
- Security Checks (only on Windows 7 & 8/8.1)
- DDI compliance checking (only on Windows 8/8.1)
- Miscellaneous Checks
4. Select - "Select driver names from a list"
5. Click on the "Provider" tab. This will sort all of the drivers by the provider.
6. Check EVERY box that is NOT provided by Microsoft / Microsoft Corporation.
7. Click on Finish.
8. Restart.

Important information regarding Driver Verifier:

- Perhaps the most important which I will now clarify as this has been misunderstood often, enabling Driver Verifier by itself is not! a solution, but instead a diagnostic utility. It will tell us if a driver is causing your issues, but again it will not outright solve your issues.

- If Driver Verifier finds a violation, the system will BSOD. To expand on this a bit more for the interested, specifically what Driver Verifier actually does is it looks for any driver making illegal function calls, causing memory leaks, etc. When and/if this happens, system corruption occurs if allowed to continue. When Driver Verifier is enabled per my instructions above, it is monitoring all 3rd party drivers (as we have it set that way) and when it catches a driver attempting to do this, it will quickly flag that driver as being a troublemaker, and bring down the system safely before any corruption can occur.

- After enabling Driver Verifier and restarting the system, depending on the culprit, if for example the driver is on start-up, you may not be able to get back into normal Windows because Driver Verifier will detect it in violation almost straight away, and as stated above, that will cause / force a BSOD.

If this happens, do not panic, do the following:

- Boot into Safe Mode by repeatedly tapping the F8 key during boot-up.

- Once in Safe Mode - Start > Search > type "cmd" without the quotes.

- To turn off Driver Verifier, type in cmd "verifier /reset" without the quotes.

- Restart and boot into normal Windows.

If your OS became corrupt or you cannot boot into Windows after disabling verifier via Safe Mode:

- Boot into Safe Mode by repeatedly tapping the F8 key during boot-up.

- Once in Safe Mode - Start > type "system restore" without the quotes.

- Choose the restore point you created earlier.

-- Note that Safe Mode for Windows 8/8.1 is a bit different, and you may need to try different methods: 5 Ways to Boot into Safe Mode in Windows 8 & Windows 8.1

How long should I keep Driver Verifier enabled for?

I recommend keeping it enabled for at least 24 hours. If you don't BSOD by then, disable Driver Verifier. I will usually say whether or not I'd like for you to keep it enabled any longer.

My system BSOD'd with Driver Verifier enabled, where can I find the crash dumps?

- If you have the system set to generate Small Memory Dumps, they will be located in %systemroot%\Minidump.

- If you have the system set to generate Kernel Memory Dumps, it will be located in %systemroot% and labeled MEMORY.DMP.

Any other questions can most likely be answered by this article:

Using Driver Verifier to identify issues with Windows drivers for advanced users


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