After testing and testing,

In bios, I cannot set SA configuration for GPU to PCIE as default. On reboot settings for GPU revert to default.


Also, on reboot monitor #2 does not display unless I force driver restart « Win, Ctrl, shift, B ».

On cold boot or shutdown & re start, monitor will display.

I never had this issue with motherboard Prime Z270 A & Prime Z390M Plus using same hardware (video card, memory, drives etc.)


This is a bios bug. 😞
https://i.imgur.com/t0qWZO6.png
https://i.imgur.com/thjOF8n.png
https://i.imgur.com/U2GU9Xr.png
https://i.imgur.com/D79CkY0.png