It could be one of many things, not just the CPU. It could be something really simple. Check all your connections, check to make sure all the components are seated correctly. It could be something as simple as a unplugged wire. It's also possible that the case could be causing shorting issues. It's also possible that the PSU could have caused the issue(s).
Also I'm not sure about the CPU. I suppose if it shorts it could cause malfunction(s) elsewhere.
Your problem may not be permanent, you just may need to take a few hours to play around a bit.
Sorry I can't really help, but I've tried.