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Old December 26, 2011, 09:38 PM
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Exclamation Need help with IRQL_NOT_LESS_OR_EQUAL (a) BSOD.

Ok, my system is:
CPU: E8400@ 3.00GHz
GPU: Gigabyte GTX560
RAM: Corsair TWIN2X4096-8500C5 XMS2 4GB (two 2GB sticks)
MOBO: Gigabyte GA-EP45-UD3L
HDD: WD 500GB Caviar Black
PSU: Corsair CMPSU-550VX
OS: Win7Home Premium SP1

I have been constantly getting BSODs (while playing games or just regular desktop browsing) with the same error:

IRQL_NOT_LESS_OR_EQUAL (a)

and all the memory dumps from crashes point to memory_corruption and occasional Windows kernel files, as
the root of the problem.

Here's what I have tried so for to figure out the cause(with no luck)

1. Clean reinstall of Windows with all the important updates installed through windows update (including
SP1)
2. Downloaded latest chipset(from Intel) + GPU(from nvidia[whql]) drivers
3. Ran memtest86 for 9+ hours (10 pass) with 0 errors
4. Did CHKDSK /r with 0 errors
5. Updated the BIOS to the latest version (through Gigabyte's website)
6. Ran WD HDD diagnostics tool with 0 errors
7. Loaded BIOS defaults with 0 overclocks present in the system.
8. Driver verifier did not return anything

I am running out of options right now !!! I do not know what to do !


I am attacking all the memory dumps that I've gathered.


I WOULD REALLY APPRECIATE IF SOMEONE COULD HELP ME OUT !!!???

THANK YOU !
Attached Files
File Type: rar BSODminidumps.rar (110.8 KB, 12 views)

Last edited by win32k; December 26, 2011 at 09:43 PM.
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Old December 26, 2011, 09:54 PM
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99% of the time you should be checking your ram
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Old December 26, 2011, 10:45 PM
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Quote:
Originally Posted by enaberif View Post
99% of the time you should be checking your ram
That's what was my conclusion as well.

I was thinking... I read a lot complains for my RAM, especially here:

Newegg.ca - CORSAIR XMS2 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory Model TWIN2X4096-8500C5

for not being stable at rated speeds, 1066Mhz 5-5-5-15 2.1v that is.

So, maybe if I downclock the RAM from 1066Mhz 5-5-5-15 2.1v to 800Mhz 5-5-5-15 1.8v it could help ?

I dunno, it could be that.
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Old December 26, 2011, 10:57 PM
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I would run memtest first to verify
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Old December 27, 2011, 04:29 AM
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borrow ,buy or beg some Kingston hyper x or mushkin Silverlines if you can findem now(thats 775 stuff) ddr 2 800 since you aren't ocing much
Also settings on the board can be off slots ram is in,to but-+...
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Old December 27, 2011, 05:25 AM
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check this for more information about bluescreen errors (it'll help you fix it in detail):
Blue screen of death (STOP error) information in dump files.
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Old December 27, 2011, 07:20 AM
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first find out what REVISION of MB for different chips on MB. look for Rev X.XX on board

with GA-EP45-UD3L both MB Revisions i see

bios ver F9 Enhanced memory compatibilities 2010/01/18

update bios only in dos not in windows with correct Rev # to your MB
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Old December 27, 2011, 10:42 AM
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try also relaxing the timings from 5 to 6, at 800MHz
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Old December 27, 2011, 10:45 AM
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Quote:
Originally Posted by enaberif View Post
I would run memtest first to verify
Already did, for 9 hours with 10 passes and 0 errors

Quote:
Originally Posted by tyreman View Post
borrow ,buy or beg some Kingston hyper x or mushkin Silverlines if you can findem now(thats 775 stuff) ddr 2 800 since you aren't ocing much
Also settings on the board can be off slots ram is in,to but-+...
What do you mean "can be off" ? How can I fix it ?

Quote:
Originally Posted by KaptCrunch View Post
first find out what REVISION of MB for different chips on MB. look for Rev X.XX on board

with GA-EP45-UD3L both MB Revisions i see

bios ver F9 Enhanced memory compatibilities 2010/01/18

update bios only in dos not in windows with correct Rev # to your MB
Already did that in DOS with the correct Rev#(i.e. 1.0) of my mobo, had no effect.
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Old December 27, 2011, 10:52 AM
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Quote:
Originally Posted by ahmaden View Post
check this for more information about bluescreen errors (it'll help you fix it in detail):
Blue screen of death (STOP error) information in dump files.
Ok, BlueScreenView says Bug check code is: 0x0000000a
and Crash address is: ntoskrnl.exe+7cc40

for ALL the BSODs


Quote:
Originally Posted by MARSTG View Post
try also relaxing the timings from 5 to 6, at 800MHz
I will do that ! thanks ! I still have to change the speed from 1066 to 800 and voltage from 2.1 to 1.8
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