I purchased a new ONDA B250 D8P Ver 1.00 (the 12 slot board) and got it up and running easily. It ran with 6GPUs for just over two full days and then tonight it seems to have just died while it was working. It won't boot or post and never even wakes up the display now.
I reseated memory and pulled the battery and put it back. Also tried a new USB stick that boots in another board fine. No lights ever light on the ethernet port. No dice.

Any tips on troubleshooting this board?