Ok, I don't have the solution, but I'd like to jump in as someone with the same issue. New build with the same mobo, fx-8150 CPU, 16gb RAM, 650w PSU, and a simple PCI video card (still awaiting arrival of the final video card).
Assembly went without a hitch. Power on results in power LED lighting, DVD gets power, and the big green LED(standby power) on the mobo lights up as well as the two smaller green ones for TPU and EPU, if enabled. All other POST LEDs are off. The display immediately shows Entering Power Save and the display LEDs go from green to amber. I have no speaker in the chassis, so I don't really hear any beeps, though I've heard sounds coming from the mobo?
Anyway, indications are that the display is not getting a signal from the card, but I don't even get any indication that it's even going through POST and the BIOS? Thoughts and suggestions most appreciated.
Also, I have re-seated all connections and the CPU & fan, everything seemed as it should be prior to initial power up, but the results were still the same.