Originally Posted by Backov
So, the equipment in question is:
8 gigs Mushkin (EM2-6400, 5-5-5-12)
Corsair HX520W (1.5 years old)
P5Q Pro motherboard (3 different ones now)
8800 GTS 640mb - unfortunately I don't have another vid card to use instead to take the load off the PSU, and there's no onboard video.
My first thought was voltage (in that the RAM wasn't getting enough) but you said you tried that, so that's out I guess.
What about your RAM timings in BIOS? Sometimes, if you leave the timings to the motherboard to decided about (i.e. "auto") then it can select timings that are not necessarily appropriate for your RAM.
Try setting the RAM timings manually if you haven't already. Also, while you're in the BIOS, check that the RAM is running 1:1 with your CPU bus speed. Some motherboards set the RAM to run at what they think is it's fasted possible speed when set to "auto" which can sometimes be faster than the CPU bus speed. Just check to see that the RAM is 1:1 with the CPU bus speed and change it to be so if it isn't.
Also, just to be sure, what wattage/voltages does your PSU have? Is it at all possible that your RAM isn't getting enough power at all? What is your PSU spec? Probably not a problem, but might as well check.
That's all I can think of atm.
Let us know how it goes; somebody will probably help you find the answer. Good luck!
Highly-AnnoyedEdited by Highly-Annoyed - 10/12/08 at 4:16pm