Hello! Im running a computer with this Asus P5Q SE2 motherboard and 4gb of Corsair TWIN2X PC6400 DDR2 2GB KIT CL5 memory. In other words, i got 4 memory sticks. I cannot run memtest without errors with any more ram then 1 stick. Ive tried swapping all 4 memory sticks around to check if some memory is failing but with no success. When i use 1 memory stick (does not matter which one) i get no errors in memtest. but with anything else then 1 stick, i get errors. Worth mention aswell: when i try installing windows7, the install is extremely slow, it can take up to 10min before first screen pops up after loaded the cd. Also when i get a BSOD , the memory dump takes ages. I mean really.. it takes approx 10min for the dump to count from 0% to 100% before it restarts... Any ideas? Here is my computer specs: Asus p5q SE2 bios rev 0702 (which is very odd , it seems that this bios does not exist on asus homepage) Intel quadcore q9400 2.66ghz Corsair TWIN2X PC6400 DDR2 2GB KIT CL5 X2 (4GB) Creative X-Fi xtreme gamer Windows 7 x64 Corsair VX550W PSU XFX Geforce GTS 250 1gb EDIT: I get same issue in windows 7 x32 aswell so it has nothing to do with that i think... I had stability issues with alot of random bluescreens when the memory voltage was set to auto which according to CPU-Z said to be 1.8v, so i changed it in bios to Manual and set it to 1.9v, but CPU-Z still reads 1.8v.. But the issue seems to have almost disappear... But sometimes bluescreens can occur at random situations so problem not solved..