It's probably the processor. I got a new Mobo once and put my old processor in and it wouldnt boot up. So I had to get a new CPU and it worked fine. I've heard many cases of bad cpu's making the comp not post. Bad cpu = no post. But it might be something else, but most likely the mobo. I'd try to find someone who will loan you a cpu that will work with the board. If not, take it to a place like I did, they have cpu's lying around they can swap out and test.