I have a less then 1 yr old hp f2105 monitor that is supposed to be HDTV ready. My connection is DVI directly from the monitor to the HDTV cable box (Comcast). This set up worked fine for 10 months, but now...the picture shows beautiful for half a second then to snow for 4-5 seconds, picture, then snow and the pattern goes on. The cord has been tested, the DVI function has been tested (Circuit City), and comcast insists the box "works at the shop". (I watch as they have tried everything on the cable settings) I am suspicious of the resolution setting in the monitor....what it says I am runnig, and what is recommended are different? I know others have this same problem too. Anyone have suggestions?? Thank you