Question PC won't boot. Power LED flashing. CPU Debug LED on.

chocomonkey

Reputable
Nov 10, 2016
5
0
4,510
My Build
CPU -AMD Ryzen 5 3600x
Motherboard-MSI MPG x570
RAM -G.skill Trident Z DDR4 3000mhz 8gb*2
GPU -GIGABYTE GeForce GTX 1070 8GB WINDFORCE
Power Supply-EVGA SuperNOVA G2 750W 80+
Storage -Samsung 850 EVO-Series 250 GB

I just upgraded my CPU and Motherboard while keeping my other components the same. My PC won't boot properly. The fans start but the power LED flashes slowly and the CPU debug LED is on. There is no video out.
I have tried:
  • Running it without the GPU
  • Running it with 1 stick of RAM with each stick
  • Running it without the SSD
  • Using the flash boot button to flash boot a BIOS update
  • Ordering a replacement CPU and trying that
All of these result in the same result.
Does anyone know what the problem might be and how to solve it?