if you wanna know your motherboard is fried or not then follow these steps !!
put out all of you rams and start up the pc, if you hear a beep sound then your mobo is alright! If you haven't any beep sound then sure your mobo is dead.
of course! Mobo is ok, so the problem is in the cpu place remove out the cpu and reseat it correctly and put the cooler tightly... Hope thats help but i've solved same problem with my pc and it's work perfectly.