It is confused about your GPU, it is recognizing it as an external GPU, the ones that connect through Thunderbolt to notebooks.
This is most likely a driver issue, as someone already stated uninstall them from Safe Mode with DDU and then reinstall latest drivers from nVidia
The only other thing I can think of is for your card to be one of those chinese botch cards that adapt a mobile GPU to be used in a desktop PC, they are known to touch the BIOS files.
