Input Not Supported Message when Launching Windows Media Center

I have been using my Samsung LCD flat panel for over a year with my computer and running Windows Media Center with no issues. After my last system update which included windows update as well as an optional update to my Nvidia graphics card, when I launch Windows Media Center (WMC) my screen turns black and a floating box appears which states "Input not supported". If I switch applications and WMC is running in the background, the screen reappears normally.

So, this is only happening when I launch WMC. I have checked the display setting and they seem to be inline with what the monitor supports and again, I have no issues running any other graphics intensive program except WMC.

I have tried to do a system restore but for some reason my computer is having issues. My next step will be to reformat using my original system restore disks, which I would really like to avoid.

Does WMC have separate display settings that I need to adjust? Can anyone provide any guidance?

-JD