Prior video card was Radeon HD 4870 1GB. Upgraded to Radeon R9 290X 4GB.
Windows Media Center will no longer show live TV content from connected HD HomeRun 3 tuner cablecard network appliance.
Display driver error
The video playback device does not support playback of protected content.
Video card is connected to 28" Samsung 4K monitor via display port-to-display port cable.