New CPU no display



I sold my old cpu. And no I am using my Gpu. All the power cords are connected. Could it be a bios update? How much newer is the i7 4770 than the i5 4670k
 


I sold my old cpu. And no I am using my Gpu. All the power cords are connected. Could it be a bios update? How much newer is the i7 4770 than the i5 4670k
 
Tried all this. Still didn't work. Do you think that I could be my broken cpu fan? It won't screw in my motherboard anymore as the pointy plastic ends are now bent, and broken off. If I order a watercooler do you think it will solve the problem?