thank go i found this thread, I've been looking for an hour trying to see if someone had a similar issue that i was facing, im upgrading an old computer for a friend and they're moving from an old intel based 7600 to new 3700x and a b550 board and windows wasnt being read by the bios. im praying that your solution works for me too
i have bought a new GPU a few days ago and with that GPU i cannot enter BIOS. I have tried every DP and HDMI slot and the same thing is happening. I tried another monitor, the same thing. I have inserted another GPU RX5600XT into the motherboard, set the BIOS to default values, and the same thing is happening with RX6800 (With RX5600XT the BIOS works normally). I have tried to place the RX6800 into Asus motherboard and the BIOS shows normally. I updated the BIOS to the latest version (in the pictures attached is the old BIOS version) and nothing changed. I have tried everything that comes to mind and nothing worked.. To be clear, the GPU works in windows fine without a hitch, games and everything, latest vBIOS is on the GPU. I found only one similar case on the forum from linustechtips, but unfortunately no one answered or helped ( -bios-issue-msi-b550-gaming-plus/). I contacted ASRock support, but they couldn't help me, they said that they don't have a B550 Tomahawk for testing.