If you think it's the ram, and it's happened to me too. Then try memtest86 at memtest86.com I like the ability to make a bootable cd myself from an iso. Anyway If you have 2 chips just pull one and test it, then try the other. Make sure you put it into extended test mode since I had one that would only fail when I did that. My experience with this type of problem has always been, RAM, Cooling, bad power supply, and once a bad CPU. Most of the time it's RAM and Cooling though. Swanny