Just rebuilt my system with a "new" motherboard, and it won't post. Just turing on all the fans, and then shutting down for less than a second. I got the mobo because the bios was gone, but I bought another chip. I'm just wondering if it's the new cpu, or my bios. Thanks for the help. BTW it is an i5 3570k, and an ASRock z75 pro 3.