Seems very common. I couldn't use the internal changer either when I briefly tried Win8.
Anways see here:
https://forum.team-mediaportal.com/...isplay-calibration.119610/page-2#post-1001755
Anways see here:
https://forum.team-mediaportal.com/...isplay-calibration.119610/page-2#post-1001755