Well I was swapping cases when this happened. I have swapped out every part I can think of, memory, cpu, video, psu, psu fan. I have left only the basic parts in video and mem. I get the same result the comp starts for about 4 secs then shuts off. I reset CMOS taking batt out and putting back in. No matter what part I swap in and out same results. I have the board on a piece of wood. I was able to get it to POST once but only once. I'm figurin the board is done, I just want to be sure. Asus M2N-SLI. Thanks for any input.