sbios settings
given suggestion this may be a BIOS issue, I've posted this issue as a question @, https://forum.asrock.com/forum_posts.asp?TID=19749&title=x470d4u-p4-20-ryzen5600g-fatal-error-gpu-boot and pinged ASRockRack tech support via their online tech supp form. If anyone _here_ knows an appropriate contact @ ASRockRack to link into this discussion, that'd be useful/appreciated!