I had a question about that too. Already replaced my CPU because of the blink code for $15 bucks with an upgraded CPU for the socket, so that isn't it. Next thing is the MoBo. Everything else, I'm sure, is working fine. Although I could probably use a new keyboard too. The backspace decided to self destruct and instead of asking me, my wife decided to try to just snap it back in. Yay for tiny plastic pieces!
As far as i can tell, the only thing wrong is the MoBo itself, and the MoBo thinks it's the CPU.