I only
want to hook up my laptop temporarily to watch videos or streaming media from
the pc to the hdtv, so I use an hdmi cable and plug them together.

It has worked
in the past to effortlessly watch Netflix movies but I don’t understand why
sometimes when I plug the pc to the hdtv I can’t get the tv to “find” the pc?

I
usually leave the hdmi cable hooked up to the tv and just plug in the pc
whenever I want to stream something from it to the tv, but lately the tv says
“no signal” when I switch the mode to hdmi…

I have
tried unplugging and rebooting both devices and still get no signal when it
worked previously—any suggestions?