hey sorry if this is posted in the wrong spot but i honestly dont know where else to put it. I got a mac book pro when i graduated (class of 11) and i just bought myself a 64 inch JVC HDTV. In an effort to save some money i went on ebay and bought a generic cable that went from my thunderbolt port to my HDMI hookups to connect them to stream netflix, youtube, facebook news feed, basically turn out a massive monitor. unfortunately it doesn't work. well it works for a little bit but than the tv image starts to refresh and than my computer starts to refresh. basically what i would like to know is why it is doing this and how can i keep it from doing this?