Ok, good luck
Are you on 10_125 ?
It sounds as though you have dual GFX cards
a) removed integrated graphics drivers with DDU (Intel)
b) removed nvidia drivers with DDU
c) removed AMD drivers with ddu
And you're choosing NVidia or AMD as the conditions dictate.
As I read your last post, the integrated gfx is uninstalled (DDU) and you were able to install the AMD 14-12 driver (followed by installing CCC, sans .NET4.5, normally)
There have been reports of issues re: dual GFX cards. I don't recall if anyone found a good solution. If you decide you want to try using the integrated card (switchable graphics?) with either the NVidia or AMD card and that causes issues, at least you have a workaround.
Keep members updated on your testing - thanks.