boot with one gpu... verify it works.
shutdown, reboot and confirm.
now, add one gpu.
let it get to the point where both are detected again. test.
reboot and confirm.... and keep adding one more gpu like this.
sometimes windows gets wonky and needs to be walked step by step.....
everything is good with gpu 1-3 then as soon as I add a 4, one will go code 12 on me and its not even necessarily the 4th one I plugged in