I recently bought an Insignia 1080p TV, and attached it to my early 2009 MP (with GT120 card) through the mini display port to the HDMI input on the TV. The picture looks great, except when there is bright sunlight in the video, in which case the areas where there is sunlight appear magenta. If I pull the window down to my monitor (Dell 24", 1200x1920), the magenta disappears. Insignia says it is my computer, but that seems unlikely to me. Any thoughts?