So I started to have some issues with a ~5 yr old PC so I decided I'd upgrade a little. The HDD started locking up after windows booted and sometimes the video would never comes up. My guess was the motherboard since it was 2 different issues. But I pretty much have all new parts and still having problems. Here is what I have now: ( keep in mind I wasn't going for the mac-daddy PC. Just something slightly better to pirate with, look at porn and the occasional game since I can't do that on my work laptop. ) - 500W power supply *NEW* - Gigabyte EP45C-UD3R motherboard *NEW* - 500GB Seagate HDD, sata *NEW* - GeForce 8600GT *NEW* - Kingstone 2GB memory (2x1gb) *NEW* - Corsair 1GB memory (2x512mb) *From Old PC* - Intel P4 3.2ghz *From Old PC* Here is the problem: - The computer will boot up and show the motherboards splash screen for a few seconds.... then will completely shut off for a few seconds, then boot back up again. Tried new and old power supply, still does it. (yes both ATX connectors are plugged in) Tried new and old video card, still does it. Tried different variations of the memory, still does it Tried reseating CPU/Fan, still does it Tried older HDDs, still does it The only thing left is the CPU, which I was going to hold off on buying because I already spent my money unwisely since I was buying these parts one at a time not expecting to pretty much have a new PC at the end of it all. But its a Socket 775 which is what the board supports and on there website it looks like it is supported: http://www.gigabyte.com.tw/Support/Motherboard/CPUSupport_Model.aspx?ProductID=2953 Any other ideas. Kind of pissed I could have spent all this money by now on a better rig that would work.