Computer not posting but Graphic Card light blink

[Thorium90]

Howdy, 

I just upgraded my motherboard and my PC will not post. I was having trouble before the upgrade. I test the power supply with a paper clip and the fan turn so assumed it was the old motherboard. Currently, when I turn on the power and press the start button the CPU fan shutters and the light on the graphic card blink about 2 time a sec. I double check the connection and cables. Is there anything else I can do? I figure it either the PSU or the motherboard. Is there a way to elemenate one or the other before I have to try and RMA something? My spec are below. 

Thanks in advance, 

 

Gigabyte B450M DS3H WiFi

AMD Ryzen 5 3600

G.SKILL Ripjaws V Series 32GB (2 x 16GB) 288-Pin PC RAM DDR4 3200 (PC4 25600)

SeaSonic M12II 750 SS-750AM2 750W ATX12V / EPS12V 80 PLUS BRONZE 

 

[emosun]

3 minutes ago, Thorium90 said:

I was having trouble before the upgrade. I test the power supply with a paper clip and the fan turn so assumed it was the old motherboard.

was that the only diagnostic you did?

[Thorium90]

I messed with the CPU and GPU to make sure everything was setted and move the ram around to different slot trying one stick at a time. Other than that yes.