OK, here is my sad story. Last week my old PC died, time to build a new machine. Bought all of the components (had to buy the motherboard twice as the first one had a faulty PCIE slot). Put everything together, works great. Running Vista Ultimate 32bit. I use this machine as a Media Center machine primarily. I have 2 xbox 360's hooked up as Media Center Extenders. This morning I was watching tv on one of the extenders when it froze. I went downstairs to check the pc and it was off. I tried turning it back on and nothing. Turned the PSU off and on, then hit the power switch on the PC, for a split second all of the fans spun up and then died. Pressing the power switch again does nothing. If I power cycle the PSU it does the same thing (fans spin up briefly then nothing). I've read several forums, but can't seem to find the right answer. I tried resetting the CMOS with the jumper, that didn't work. I should mention that there are 2 lights on the motherboard that are on (which indicates to me that it is not my PSU or my motherboard), and that the power LED always stays on. My other concern is that my CPU was running at around 47-51 Celsius. I had originally thought that my system had overheated, but I have had the case open for a couple of hours with a fan blowing on it, it has cooled down but it still won't boot back up. I am planning on picking up a new CPU cooler, but right now I need to get my system going first. Any thoughts?