[Troubleshooting]

So I got a MSI Gaming 5 Mobo with a I7 4790k. Its a new build which I got around 10 days ago. Today I was using the computer when suddenly everything went blank, but the PC still had power running through it.

The LED on the motherboard that indicates the CPU temp also went out. Do I need to get my motherboard replaced or my CPU? Since the cpu fan is still running, and the lights on the mobo other than the LED for the CPU are still on.