Freeze while playing WoW/COD4/Streaming video

[FREEZINGisFUN]

Many people seem to be having this issue and i've yet to find a solution.
700w coolmax psu
460 gtx se
soundblaster audigy 2 zs
pentium d 3.6 (dual-core)
2x1gig pc2-6400u ram sticks
biostar tp45e mobo
wesdigi 1.5 tb digital caviar green 64mb/cache
dont have a computer "case", its kinda like a stand, shits mounted and everything, gets great airflow

I'm now using Windows 7 Pro 64
Upgraded From WinXPPro64, freeze with both

Though I have got a couple blue screens, freezing seems to be a lot more common. One of the blue screens said something along the lines of PFN_LIST_CORRUPT.

I have 4 sticks of the same ram, can only use 2 at a time with this motherboard, tried swapping 2 for the other 2- still freeze. I've ran memtest86 no prob

Processor never exceeds 41c, usually is 25-35c. (This info is from booting up after a freeze)

switched to onboard sound after unplugging soundblaster

tried a different video card
switched sata connector slot

defragged

drivers dealt with etc...

windows up to date



one question; should I unplug the video card before installing drivers? i normally don't, but i've ran out of ideas.

SHOOT

 

[Route44]

0x4E: PFN_LIST_CORRUPT is probably the single strongest error code that indicates corrupted memory. How long did you run memtest? The rule is a minimum of 7 Passes and the more the better.

Also, find the voltage specs of your RAM and compare it to the voltage setting in your BIOS. Do they match? How about the memory timings?