I have a Gigabyte AORUS Gaming 7 with a Threadripper 1950x that was working for almost a year. Tried to start it up and it will not even post. The board immediately shows CPU light and post code of D0. I have a 1000 watt Cougar CMX power supply and AORUS Radeon RX570 video card. Everything has been running smoothly and this rather abruptly happened. Nothing has ever been overclocked and ran the stock configuration.
The key here is everything was working for a long time and then nothing. Everything is still in warranty. I tried resetting the BIOS but it wont even do anything.
As another note, all fans spin when powered on and the vga lighting cycles normally.