Here's an interesting thing.
I moved to HiveOS, flashed (via Hive) all my GPU to the modified bios.
One on rig, I wanted to switch it back to Windows for some general testing and comparison. Loaded up Windows, but none of the AMD software will recognize my cards. Win10 seems to have an issue regardless of what drivers I attempt to put on there.
So do I have to put the old BIOS back on, install the drivers AND THEN replace with the modded bios? Doesn't make sense as to what happened.
Just trying to figure this out.
Use AMD pixel patcher with modified cards
https://sourceforge.net/projects/amd-ati-pixel-clock-patcher/