Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: BSOD - IRQL not less than equal

03 Sep 2013   #1

Windows 7 Ultimate 64bit
BSOD - IRQL not less than equal

I have been getting this message on and off for a while whenever I play any recent-ish games for 10 minutes or more. Usually I just stop playing and don't really mind but Rome II just came out and I want to play

Anyway I have uploaded my crash dump, any help will be much appreciated.

My System SpecsSystem Spec
03 Sep 2013   #2
x BlueRobot


Your SystemInfo.txt file seems to be missing, please upload the file by following:

  1. Start
  2. Type: cmd > Right-Click
  3. Run As Administrator
  4. Type: systeminfo.exe>C:\systeminfo.txt
  5. Please upload and attach in your next post
My System SpecsSystem Spec
03 Sep 2013   #3

Windows 7 Ultimate 64bit

Oh right, here you go.
My System SpecsSystem Spec

03 Sep 2013   #4
x BlueRobot


Thanks, I would check for any additional Windows Updates, I have around 200+ Windows Updates installed and the average at the moment, I think is around 180+ Windows Updates.

BugCheck A, {fffffab005ecea60, 2, 1, fffff800030b7c0e}

Probably caused by : dxgmms1.sys ( dxgmms1!VIDMM_PROCESS_HEAP::Free+a2 )
Usual causes:  Kernel mode driver, System Service, BIOS, Windows, Virus scanner, Backup tool, compatibility
fffff880058a6960 -- (.trap 0xfffff880058a6960)
NOTE: The trap frame does not contain all registers.
Some register values may be zeroed or incorrect.
rax=fffff880058a6a60 rbx=0000000000000000 rcx=fffff880058a6a60
rdx=0000000000133b77 rsi=0000000000000000 rdi=0000000000000000
rip=fffff800030b7c0e rsp=fffff880058a6af0 rbp=fffffa8000025650
 r8=fffffa800c15c410  r9=0000000000000000 r10=0000000000000000
r11=fffff880058a6ac0 r12=0000000000000000 r13=0000000000000000
r14=0000000000000000 r15=0000000000000000
iopl=0         nv up ei pl nz na po nc
fffff800`030b7c0e f0410fba6e1000  lock bts dword ptr [r14+10h],0 ds:00000000`00000010=????????
0: kd> !thread
GetPointerFromAddress: unable to read from fffff800032bd000
THREAD fffffa800bac9990  Cid 13fc.0724  Teb: 00000000fffdb000 Win32Thread: fffff900c2134c20 RUNNING on processor 0
IRP List:
    Unable to read nt!_IRP @ fffffa800ba5e2e0
Not impersonating
GetUlongFromAddress: unable to read from fffff800031fcba4
Owning Process            fffffa800c15c410       Image:         Rome2.exe
Attached Process          N/A            Image:         N/A
fffff78000000000: Unable to get shared data
Wait Start TickCount      303981       
Context Switch Count      2108863        IdealProcessor: 0                 LargeStack
ReadMemory error: Cannot get nt!KeMaximumIncrement value.
UserTime                  00:00:00.000
KernelTime                00:00:00.000
Win32 Start Address 0x00000000013514ed
Stack Init fffff880058a7c70 Current fffff880058a77c0
Base fffff880058a8000 Limit fffff8800589f000 Call 0
Priority 11 BasePriority 8 UnusualBoost 0 ForegroundBoost 2 IoPriority 2 PagePriority 5
Run Driver Verifier to scan for any corrupted drivers which may be causing problems, this program works by running various stress tests on drivers, in order to produce a BSOD which will locate the driver; run for least 24 hours:
information   Information
My System SpecsSystem Spec
04 Sep 2013   #5

Windows 7 Ultimate 64bit

Here's a dump from a crash this morning after enabling driver verifier, this was outside of the game. I will have a go later after work to see if I get a BSOD when playing.
My System SpecsSystem Spec
04 Sep 2013   #6

Windows 7 Ultimate 64bit

Also regarding the driver verifier, all of the drivers on the list are listed as Microsoft corporation so there actually isn't any for me to select. (initially I just selected them all and it seemed to cause BSODs though)
My System SpecsSystem Spec
04 Sep 2013   #7

Windows 7 Ultimate 64bit

So heres the recent BSOD dump when I've been gaming along with a picture of one of the screens which may have some useful info on it.
My System SpecsSystem Spec
05 Sep 2013   #8
x BlueRobot


Sorry for the slow reply; disable Driver Verifier, you may need to enter Safe Mode with Command Prompt, if your not able to boot into Windows normally.

BugCheck C9, {7, fffff88004f3f320, fffff98003c5eee0, 0}

*** WARNING: Unable to verify timestamp for mcdbus.sys
*** ERROR: Module load completed but symbols could not be loaded for mcdbus.sys
Probably caused by : mcdbus.sys ( mcdbus+36320 )
2: kd> lmvm mcdbus
start             end                 module name
fffff880`04f09000 fffff880`04f45880   mcdbus   T (no symbols)           
    Loaded symbol image file: mcdbus.sys
    Image path: \SystemRoot\system32\DRIVERS\mcdbus.sys
    Image name: mcdbus.sys
    Timestamp:        Tue Feb 24 10:34:07 2009 (49A3CD1F)
    CheckSum:         00041E84
    ImageSize:        0003C880
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4
Your MagicISO SCSI Host Controller driver seems to be causing problems, I would check for a updated version of the program, or remove the program completely.

2: kd> !irp fffff98003c5eee0
Irp is active with 1 stacks 1 is current (= 0xfffff98003c5efb0)
 Mdl=fffffa8007d11a50: No System Buffer: Thread 00000000:  Irp stack trace.  
     cmd  flg cl Device   File     Completion-Context
>[  f, 0]   2 e1 fffffa800a85f570 00000000 00000000-00000000    pending
	      fffffa800a85f570: Could not read device object or _DEVICE_OBJECT not found

			Args: fffffa800a8eb338 00000000 001b0011 00000000
Okay, so an IRP was passed to a IO Completion routine with the Cancel flag still set.
My System SpecsSystem Spec
05 Sep 2013   #9

Windows 7 Ultimate 64bit

That program should be uninstalled, I can't find it on my list of programs in the control panel. Why is it so hard to uninstall some programs?
My System SpecsSystem Spec
05 Sep 2013   #10
x BlueRobot


My System SpecsSystem Spec

 BSOD - IRQL not less than equal

Thread Tools

Similar help and support threads
Thread Forum
Bsod- irql not less or equal
BCCode: a BCP1: 0000000000000008 BCP2: 0000000000000002 BCP3: 0000000000000001 BCP4: FFFFF80002E84438 OS Version: 6_1_7601 Service Pack: 1_0
BSOD Help and Support
BSOD IRQL Not Less Than or Equal
Hi, After waking from sleep, my computer seems to cycle through a number of BSOD with the error message IRQL Not Less Than or Equal. While I've received this message with BSODs off and on for the past couple of months, it seems to be increasing in frequency and I'm not sure what the cause is....
BSOD Help and Support
Here is the info from the minidump file: 091012-47671-01.dmp 9/10/2012 4:57:27 PM IRQL_NOT_LESS_OR_EQUAL 0x0000000a 0x00000000 0x00000002 0x00000001 0x830befb9 TDI.SYS TDI.SYS+60e0 TDI Wrapper Microsoft® Windows® Operating System Microsoft Corporation...
BSOD Help and Support
Bsod irql not less or equal
Hi everybody, This is my first post and I usually speak french, so sorry if my english isn't really good. I have a BSOD at start up. Sometime, I am able to start windows in Safe mode but not always. My computer is a Gateway and I have the windows that came already in it. My computer is...
BSOD Help and Support
BSOD irql not less or equal
I'm getting the BSOD with IRQL_Not_Less_or_equal as the message. Any help would be greatly appreciated. Here's the problem signature: Problem Event Name: BlueScreen OS Version: 6.1.7600.
BSOD Help and Support

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd

All times are GMT -5. The time now is 19:37.
Twitter Facebook Google+