Strange results and BSOD IRQL_NOT_LESS_OR_EQUAL

[rene3000]

Hello,

I have the following problem:
My PC crashes sporadically with the following message:

IRQL_NOT_LESS_OR_EQUAL

I have run the memtest86 and see many errors:
See attached files.



This happens when I copy large files from the network or other disks (All SSD's).

My PC specifications:

OS: Windows 8.1

HDD:
1x OCZ revodrive 3 x2 960 GB
2x Samsung PRO 850 512 GB

Mainboard:
Asus Rampage Extreme IV

VGA:
ATI Radeon 970 R2

CPU Type	Intel Core i7-4960X @ 3.60GHz
CPU Clock	3600 MHz
# Logical Processors	12
L1 Cache	64K (67214 MB/s)
L2 Cache	256K (47144 MB/s)
L3 Cache	15360K (25252 MB/s)
Memory	65775M (18228 MB/s)
DIMM Slot #0	8GB DDR3 XMP PC3-17000
	Kingston / KHX2133C11D3/8GX
	11-12-11-32 / 1066 MHz / 1.650V
DIMM Slot #1	8GB DDR3 XMP PC3-17000
	Kingston / KHX2133C11D3/8GX
	11-12-11-32 / 1066 MHz / 1.650V
DIMM Slot #2	8GB DDR3 XMP PC3-17000
	Kingston / KHX2133C11D3/8GX
	11-12-11-32 / 1066 MHz / 1.650V
DIMM Slot #3	8GB DDR3 XMP PC3-17000
	Kingston / KHX2133C11D3/8GX
	11-12-11-32 / 1066 MHz / 1.650V
DIMM Slot #4	8GB DDR3 XMP PC3-17000
	Kingston / KHX2133C11D3/8GX
	11-12-11-32 / 1066 MHz / 1.650V
DIMM Slot #5	8GB DDR3 XMP PC3-17000
	Kingston / KHX2133C11D3/8GX
	11-12-11-32 / 1066 MHz / 1.650V
DIMM Slot #6	8GB DDR3 XMP PC3-17000
	Kingston / KHX2133C11D3/8GX
	11-12-11-32 / 1066 MHz / 1.650V
DIMM Slot #7	8GB DDR3 XMP PC3-17000
	Kingston / KHX2133C11D3/8GX
	11-12-11-32 / 1066 MHz / 1.650V

Can someone explain to me please which memory module is defective?

Thanks in advance.

Rene

[David (PassMark)]

Test half the sticks at a time & slowly narrow the problem down.

[rene3000]

The memtest86 not exactly indicate which memory module is defective.
To test all 8 modules takes a lot of time.
Is there another program that can identify defective modules?

[David (PassMark)]

You don't need to test all 8.
You test 4, then 2 then 1.
Also you don't need to run the full test. Just stop it at the first error (Maybe a couple of minute in your case)

The various hardware memory managers map and interleave the memory sticks in different fashions. So it isn't easy to know which stick is bad given only the address. Intel also keeps the algorithms for doing this secret for their CPUs.

I don't know of any software that does this for all motherboards & CPUs.