i have a dell 15 inspiron laptop-1 year old-had an hdmi cable hooked up to my widescreen tv to watch/stream movies-was working fine for months now since yesterday all I get is the message-no signal-I have checked the inputs on the tv make sure it is in the right mode-even did a system restore on my laptop to an earlier date to hopefully correct the problem but still no signal-I can still view the movies on my laptop but my tv no longer recognizes the hdmi cable from my laptop