I'd suggest making a post on our troubleshooting forum. The memory QVL is only a small subset of hardware that the manufacturer white-listed for compatibility and is not all-inclusive.
Sorry, did not mean to hijack the thread with my issue.
But, the Athlon CPU definitely did not work for me. Tried 2 different MBs, flashed the latest BIOS and it would not POST. Had to settle for a Ryzen 3 2200G.
Still good build for the price. Thanks!