Sigh...so I got my asus RMA motherboard back...(looks like refurbished unit)
hooked up everything, and it still won't boot..
But instead of nothing coming on like the replaced mobo, this time the PC would start up and the fan spin for like a second then stop....(lights comes on for a second then basically everything shut down)
I tested another PSU, same thing.
Tried, resetting the cpu, ram, GPU. Tried booting without the GPU, HD. Still does the same thing.
Did I just get a dead replacement mobo or maybe possibility something else in the system is causing the problem?
Unfortunately I don't have an extra CPU or Ram I could test it with. (i7-6700K, 1 stick 16GB DDR4)