BSOD Waking From Hibernate?

Just built the girlfriend a computer:

Asrock Z77 Extreme4
Ivybridge i5 3570k
2x4GB Crucial DDR3 1600 DIMMs
OCZTech 600W PSU
Generic CDRom, Seagate HDDs mirrored, WD Primary HDD.
No GPU connected as she won't need one.

At first I tried a mild overclock at 4.4ghz and stability tested with P95 for a few hours with no errors at all. Everything worked fine!Come time for her to actually use it, of course, BSOD's ensued, followed by boot looping.Boot loop would not stop until one of the DIMMs was removed.Naturally I thought the RAM was the culprit and tested the sticks using Memtest86, 4 passes each with no errors.Next tried single sticks of RAM in each slot, booted up fine. Tried with two sticks (1&3, 2&4), and it seemed to work fine if booting from a clean shutdown (as opposed to BSOD).Reverted to default BIOS settings and it seemed to help a little, as in it would actually wake from Hibernate a few times, but then out of nowhere would BSOD again.I read somewhere that a bent cpu pin might do this, but since a single stick worked on each of the 4 slots, I think this can be ruled out.BIOS are upto date with latest 2.20 version as well.Right now the computer is working fine with only one stick of RAM, the last BSOD happened with two sticks in, opening up Photoshop and InDesign at the same time with stock BIOS settings.

Code: ==================================================
Dump File : 100812-23337-01.dmp
Crash Time : 10/8/2012 10:55:04 PM
Bug Check String : IRQL_NOT_LESS_OR_EQUAL
Bug Check Code : 0x0000000a
Parameter 1 : 00000000`0013213f

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