Computer Does Not Boot No Beep On Startup Either….

Right well a couple of days ago my computer stopped working, i’ve replaced the motherboard and connected everything up. I know the Memory, Graphics, Motherboard, HDD is fine, just want to clarify its probably the CPU thats broken before i go out and buy one.

When i turn the PC on i can hear the HDD kick in etc….. Theres no beeping and nothing comes up on the screen, blown cpu you think ?