i have a radeon 4650 hd card... i use a VGA cable to go from the pc to my monitor... i have a HDMI cable hooked to my samsung tv... i cant run both of them at the same time... in order to use my tv (thru the hdmi), i have to unlug my vga and restart my system and my tv will work, to switch back to my monitor i have to unplug the hdmi and plug in vga and restart. am i missing something? thanks for any help!!