Purple screen playing a Blu-ray movie on a 2nd monitor (HDTV)



I recently installed an ATI HD5670 graphic card in my workstation and connected a Sanyo DP46840 1080p, 46" flat panel to the HDMI port. Everything works as it should except for when I play a Blu-ray movie.

The movie plays just fine on my Samsung monitor whether it be a standard movie, copy protected movie or plain old copy of a copy protected movie and all of those options also play fine on my Sanyo.

When I attempt to play Blu-ray, however, while my Samsung is displaying it my Sanyo has nothing but a purple screen.

Ideas anyone?