pc tv converter

When you use a PC VGA to TV converter, why not show the picture on TV?
I was using the fine converter this morning. Usually, I plug into my TV to your laptop right click desktop> Graphics Options> To exit> Monitor and the screen of my laptop goes black and displays the image on the TV. This time, when I do the following my laptop screen goes black but the TV picture does not change. He did not even flicker. No idea why I can not make it work? I tried to restart laptop and unplugging everything and starting over Thanks a lot!
It all hangs interesting any good? Other options that try another screen just to see what happens. Sorry I can not give you much more help but I neeed to see the notebook for me to know what the problem was.
pc to tv converter
