computer won't turn on, no POST no BIOS

laracrof

Honorable
Mar 26, 2013
2
0
10,510
My computer hasn't been able to turn on since this morning. The POST isn't running and no sound from the SPK(connected to the motherboard). There's nothing displayed on the screen but the fans run and power supply works. I've tried switch all my components to my old motherboard but same error, I've reset the bios manually and still no display.
I want to find out which component the error is.
CPU: i3-2100 3.10Ghz
GPU: AMD HD7750
RAM : 4GB
MOTHERBOARD: GA-B75M-D3H

Since both the motherboard couldn't make it to the POST I believe its because of the CPU would I be right in this assumption? If its the CPU what are the causes for this kind of CPU damage?