I have a Windows 7 Pro X 64 computer. Several years ago I bought a Ceton Infinity 4 pci card. When I ran the Digital Cable Advisor it told me I needed to upgrade my video card to support digital cable, and I bought a AMD Radeon HD 6770 card which I have used successfully for years. Last week I reinstalled Windows and when I tried to set up WMC I was told the my Computer was not Digital Cable ready. When I ran the Digital Cable Advisor it tells me my computer now fails due the the video card or driver does not support content protection. I have updated to the latest driver from the AMD website but that does not help. . Two weeks ago 'with the same hardware' and more software installed than now it worked normally. Why will it not work now with less installed software and nothing new installed?