PC: win7 64. Sapphire HD6870 1GB GDDR5 CF. Gigabyte GA-Z68X-UD3-B3.Both my computer monitor (DVI) and my TV (DVI_HDMI) are connected as Duplicate Display. Only the one that been made preddered (Catalyst Control Center-Desktop Management-Creating and Arranging Desktops) will give a good signal while playing a movie (the other will have an annoying line that cross it evrey 5 sec) and while playing a pc-game it won't have a picture at all. I have the most updated drivers and it drive my crazy. Is there any way to work it out ?