Motherboard Power Issues.- Is it dead?

[Morakie]

I have a Gigabyte B450 AORUS Motherboard that does not appear to be working properly. Only sign of life is a light that flashes once either White, Blue or Red when the PSU is powered off. (Brand new board out of the box today. No CPU installed yet).

 

I have a Corsair TX650W Power supply, I've made sure both power cables running to the board are seated properly and secure. I've tried jumping the pins and using a case switch to cycle on the unit.

 

I've tried running it with a ram and GPU installed and without, The MB has been removed from the case and sits on cardboard to remove the chance of a case shorting it. Nothing appears to be powering on or working besides the single flash of light when the PSU is turned off.

 

Any suggestions?
 

[bmx6454]

some boards wont power anything without a cpu, not sure if this board does or not, but i wouldn't worry about it until trying with a cpu.