i have a gateway 5350 laptop and i read in a review that said it had a video out in the back so i could hook it up to a tv, i looked at mine and i found it, so i decided to hook it up to my tv. but when i did i did not see anything on the tv. the display remained on the laptop screen. is there some menu i need to pull up to get the second display or what, because i am really confused here. and don't say that i can't hook it up to a tv because i know i can(i just don't know how). please answer.