Hi there, I never had such a problem before... I'm getting strange, random BSODs. Each time something else - sometimes after a few hours, sometimes minutes... It's an old PC i use as a file server / media center: ASUS P5ND2-SLI Deluxe Some examples: 0x9c 0xfc 0x7e 0x7f 0x24 0xd1 etc. So I know these errors and solved similar problems before. I have access to a lab with hardware so I could swap etc. I know it's a hardware problem and not a driver etc.: I get the BSODs in Safe mode and even when I start from the XP CD or the UBCD... Turned BIOS to its default. At first I thought it was RAM or PSU. Replaced them (even though the RAM tested good over 7 times with memtest - in another PC). Then I thought that it might be the GPU memory, and replace the card as well... It's not a defective HDD cause it happens even without the HDD (when booting from a CD). It's not the DVD drive... also, swapped the cables (SATA and IDE). How can I test and analyst the CPU, L2 cache and the motherboard? ANY tips will be greatly appreciated! Thanks in advance!!!