IRQL less or not equal

Self built / SELF BUILT
January 28, 2009 at 15:56:24
Specs: Windows Vista, Intel Core 2 Duo/Corsair PC-4200 DDR2 4GB
I recently installed 4 brand new 1GB sticks of said ram above after doing so I got a BSOD concerning an IRQL Less or not Equal error and I am not sure why this is happening at first I thought it was a resourcing problem with my wireless nic but that turned out false and now I am stumped any suggestions?

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#1
January 28, 2009 at 16:05:10
If you got the BSOD after installing the RAM, then it would probably be a good idea to suspect that the RAM had something to with the BSOD. First I would check the RAM with memtest. If there are no errors after several hours of testing, then I would remove all but one stick and reboot. Even if there are errors, you still have to check each stick to see which one is faulty. I would also make sure that you have the correct RAM voltage set in the BIOS-you may have to increase the voltage. What clock speed are the cpu and RAM set to ?

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#2
January 28, 2009 at 16:10:45
Also verify you didn't disturb any other cards, cables, etc. by re-seating them with power disconnected.

That message can mean a hardware problem or can mean you need to reset the BIOS values. If you disconnected the power, as you should have, and the CMOS battery is weak or dead the values will revert to the defaults.


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#3
January 28, 2009 at 16:34:33
In response to the first reply I did preform a memtest already and nothing said I had an error. As to the second reply I know i did not disturb any other card and the cables I moved to get to my ram slots were just power cables and those I know are secure.

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#4
January 28, 2009 at 16:35:41
Whenever you install new RAM, the 1st thing you should do is test it with memtest86, memtest86+, or windows memory diagnostic.

There's more to the error message that just IRQL_NOT_LESS_OR_EQUAL...the additional info in that message will give you a clue as to the cause. Usually it's a driver problem or memory problem. If the system had been working OK up until you upgraded the RAM, why would you suspect the wireless card?

I'm curious as to why you got 4 x 1GB rather than 2 x 2GB? And why would you get PC2-4200 (DDR2-533) rather than PC2-6400 (DDR2-800)?


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#5
January 28, 2009 at 16:37:32
What I did notice later in my testing to see what the problem was I noticed that one of the BSOD's that popped up showed a resource that belonged to my wireless nic and for some reason I updated the driver on it but it did not work with my network so I rolled it back and what I noticed after I did this the resource address changed from 0x0000000A to 0x00000015 which is strange because I never heard of an IRQ address changing

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#6
January 28, 2009 at 16:41:26
jam-
I am not sure why i chose to use 4 1GB sticks aposed to 2 2GB sticks, the reason I chose to use PC-4200 @ 533MHz is because that is what my previous RAM was.

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