I have 8 gigs of mushkin ddr2 1066mhz ram, each stick tests fine seperately but when all tested together memtest86 finds MANY MANY errors. All 4 of the sticks are the same type, same make/model/speed. The timings in the bios are set as stated on the package 5/5/5/15.

Underload in windows vista 64 i get a bluescreen, and windows proceeds to dump the memory.

I am currently trying to run tests on pairs of sticks to see if i can isolate which are bad, but i am looking for more advice.