B250 MB does not work with Radeon 6800?

Very strange. I have an Asus B250 mining expert board, with 6 Nvidia 3070’s and it work perfectly.
When I attach one Radeon 6800, it will not get past the press delete to continue and it won’t even let me do that.

I have mining enabled in the bios, so all 19 slots are at 1X speed, 4G encoding is enabled.

I have followed the B250 manual where it says to install Nvidia and where to install AMD cards, and that is all correct.

It really seems that the Radeon 6800 is somehow a problem for the mother board.

Does anyone have any ideas what I could try?

I have 6 Radeon cards doing nothing now!! :slight_smile: