Im trying to stream 720p movies from my computer to my samsung 42 inch plasma. I just purchased a 40ft HDMI cable from amazon it was a cheap no name 23 dollar one. When I hook up the 40ft hdmi between my video card( info on the video card http://www.newegg.com/Product/Product.aspx?Item=N82E16814127515) on my computer and my t.v. my video card will recognize the t.v. and notice that it is there but my t.v. says there is is no signal source Even when I have things calibrated on my computer to project to two displays.. I tried hooking up the HDMI cable between my xbox and my tv to make sure it works and it worked fine with no display issues. So then I tried hooking it up between my laptop and the t.v., and the t.v. said their was no signal source.
What do I need to make it work is my video card not strong enough? Do I need an HDMI repeater or signal booster?