Dude i have the same monitor, and my graphics card is ATI Radeon HD 5000 Series. I have the HDMI USB Cabel. I can't switch it to PC. /Black Screen. If you can help, please reply to me.
Recently I have attached my pc using HDMI to my 46" Panasonic Viera tv. I have an NVIDIA 1gb video card and I noticed that when the resolution is set to 1920x1080, the edges are cut off on the screen, especially when im using a browser. After playing with the resolution, I figured out that you simply have to go to your "Menu" then "Picture" settings on your tv and "Advanced Settings". THen at bottome of this menu, select "HD Size" and set it to 'Size 2'
This fixed the edge issue and now I can browse and enjoy!