Your motherboard allows you to flash the BIOS without the need for ram or a CPU, give that a whirl and see if that revives your platform.
I'm aware of Q-Flash+ but as the power doesn't remain on for more than a couple minutes I'm hesitant to do it as a half-flashed BIOS is surely worse than one...
I realize this is very similar to the post just a few below mine with the same error code and warning light but as parts are just different enough I'm making a unique post for my issue. I built the pc back around the end of November/early December and it has had zero issues until recently (under...