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Windows 7: Driver IRQL Not less than or Equal Error?

07 Jan 2011   #1

Microsoft Windows 7 Home Premium (x64) Build 7600
Driver IRQL Not less than or Equal Error?

Bought an alienware a few months back, and everything was working fine.. Then suddendly kept getting blue screen with the error Driver_IRQL_Not_Less_That_Or_Equal. No idea what it is as never seen it before.

Ive got all paper work and original disks back at my uni apartment but at home at the momemnt, so anything online would be cool.


Attached Files
File Type: zip (2.68 MB, 182 views)
My System SpecsSystem Spec
07 Jan 2011   #2

Windows 7 ultimate 64 bit / XP Home sp3

Welcome to Seven Forums.
If you would follow this tutorial and post your dump file then the BSOD crew can help you with this.

Also please take the time to fill in your system specs here
Driver IRQL Not less than or Equal Error?-usercp-201.png

If you need assitance finding them you can use this program |MG| HWiNFO32 3.65 Download
Or Speccy Speccy - Download
Thanks Fabe

My System SpecsSystem Spec
07 Jan 2011   #3

Microsoft Windows 7 Home Premium (x64) Build 7600


Think ive done it.. if not please say so..

My System SpecsSystem Spec

07 Jan 2011   #4

Microsoft Windows 7 Home Premium (x64) Build 7600

Anyone know the problem?
My System SpecsSystem Spec
07 Jan 2011   #5

Windows 7 Ultimate x32

You have Ram issues !
My System SpecsSystem Spec
07 Jan 2011   #6

Microsoft Windows 7 Home Premium (x64) Build 7600

Whats the best way of fixing it?
My System SpecsSystem Spec
07 Jan 2011   #7

Windows 7 ultimate 64 bit / XP Home sp3

Your close on your system specs but if you look at mine you'll see their is still a bit missing.

Anyways if you think you have issues with your Ram you need to run memtest at leat 5-8 passes. with one stickk in at a time in the proer slot which can be found on the manufaturers site in the manual for ram placement.

Here's the skinny on memtest Memtest86 - Download Page
My System SpecsSystem Spec
10 Jan 2011   #8
Capt.Jack Sparrow

Windows 7 Ultimate - 64-bit | Windows 8 Pro - 64-bit


Seems like iaStor.sys also could be one of the cause. It's belong to "Intel Matrix Storage Manager driver" I would recommend to uninstall it and download a new copy from their website and install it.

If that didn't work go to C:\Windows\System32\Drivers and rename iaStor.sys to iaStor.old and reboot the System.

Then Run SFC /SCANNOW Command - System File Checker

Run a Hardware Diagnostic (Memory and Hard Drive) follow this link for instructions Hardware Diagnostic !! « Captain Debugger

Update the Following Drivers:

rixdpx64.sys Fri Jul 27 16:15:50 2007
rimspx64.sys Mon Mar 03 14:49:03 2008
rimmpx64.sys Fri Oct 03 12:09:15 2008
facap.sys    Thu Sep 25 08:04:31 2008
Follow this link for help Driver Troubleshooting !! « Captain Debugger


This is a very common bugcheck.  Usually the exception address pinpoints
the driver/function that caused the problem.  Always note this address
as well as the link date of the driver/image that contains this address.
Some common problems are exception code 0x80000003.  This means a hard
coded breakpoint or assertion was hit, but this system was booted
/NODEBUG.  This is not supposed to happen as developers should never have
hardcoded breakpoints in retail code, but ...
If this happens, make sure a debugger gets connected, and the
system is booted /DEBUG.  This will let us see why this breakpoint is
Arg1: ffffffffc0000005, The exception code that was not handled
Arg2: fffff880010ef57e, The address that the exception occurred at
Arg3: fffff880033f7948, Exception Record Address
Arg4: fffff880033f71b0, Context Record Address

Debugging Details:

EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at "0x%08lx" referenced memory at "0x%08lx". The memory could not be "%s".

fffff880`010ef57e 8901            mov     dword ptr [rcx],eax

EXCEPTION_RECORD:  fffff880033f7948 -- (.exr 0xfffff880033f7948)
ExceptionAddress: fffff880010ef57e (iaStor+0x000000000007257e)
   ExceptionCode: c0000005 (Access violation)
  ExceptionFlags: 00000000
NumberParameters: 2
   Parameter[0]: 0000000000000000
   Parameter[1]: ffffffffffffffff
Attempt to read from address ffffffffffffffff

CONTEXT:  fffff880033f71b0 -- (.cxr 0xfffff880033f71b0)
rax=0000000000008000 rbx=fffffa8003313fd0 rcx=ff7ff880035e4134
rdx=000000000000000f rsi=fffffa800860e600 rdi=fffffa800330d90f
rip=fffff880010ef57e rsp=fffff880033f7b80 rbp=000000000000000f
 r8=fffffa8003313fd0  r9=0000000000000000 r10=0000000000000001
r11=fffffa8003313fd0 r12=0000000000000001 r13=0000000000000000
r14=fffffa8003310000 r15=fffff880035e4000
iopl=0         nv up ei pl zr na po nc
cs=0010  ss=0018  ds=002b  es=002b  fs=0053  gs=002b             efl=00010246
fffff880`010ef57e 8901            mov     dword ptr [rcx],eax ds:002b:ff7ff880`035e4134=????????
Resetting default scope





ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at "0x%08lx" referenced memory at "0x%08lx". The memory could not be "%s".

EXCEPTION_PARAMETER1:  0000000000000000

EXCEPTION_PARAMETER2:  ffffffffffffffff

READ_ADDRESS: GetPointerFromAddress: unable to read from fffff80002ef10e0

fffff880`010ef57e 8901            mov     dword ptr [rcx],eax


LAST_CONTROL_TRANSFER:  from fffffa8003311000 to fffff880010ef57e

fffff880`033f7b80 fffffa80`03311000 : fffffa80`03313fd0 fffffa80`0860e600 fffffa80`0330d900 fffffa80`0330d901 : iaStor+0x7257e
fffff880`033f7b88 fffffa80`03313fd0 : fffffa80`0860e600 fffffa80`0330d900 fffffa80`0330d901 fffff880`010ef70f : 0xfffffa80`03311000
fffff880`033f7b90 fffffa80`0860e600 : fffffa80`0330d900 fffffa80`0330d901 fffff880`010ef70f ff7ff880`035e4134 : 0xfffffa80`03313fd0
fffff880`033f7b98 fffffa80`0330d900 : fffffa80`0330d901 fffff880`010ef70f ff7ff880`035e4134 00000000`00000000 : 0xfffffa80`0860e600
fffff880`033f7ba0 fffffa80`0330d901 : fffff880`010ef70f ff7ff880`035e4134 00000000`00000000 fffffa80`033142f8 : 0xfffffa80`0330d900
fffff880`033f7ba8 fffff880`010ef70f : ff7ff880`035e4134 00000000`00000000 fffffa80`033142f8 fffff880`01081202 : 0xfffffa80`0330d901
fffff880`033f7bb0 ff7ff880`035e4134 : 00000000`00000000 fffffa80`033142f8 fffff880`01081202 00000000`00000000 : iaStor+0x7270f
fffff880`033f7bb8 00000000`00000000 : fffffa80`033142f8 fffff880`01081202 00000000`00000000 00000000`00000000 : 0xff7ff880`035e4134


SYMBOL_NAME:  iaStor+7257e

FOLLOWUP_NAME:  MachineOwner


IMAGE_NAME:  iaStor.sys


STACK_COMMAND:  .cxr 0xfffff880033f71b0 ; kb

FAILURE_BUCKET_ID:  X64_0x7E_iaStor+7257e

BUCKET_ID:  X64_0x7E_iaStor+7257e

Followup: MachineOwner
Hope this helps,
My System SpecsSystem Spec

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