I was able to connect my PC up to my TV using a HDMI cable but the whole screen didn't quite fit on so I decided to try and change the resolution using the "Intel HD Graphics Properties" interface... after I did this the second screen will no longer display at all. I am assuming that I set the TV screen to try and use a resolution it doesn't support so now when I plug it in, the screen on my laptop flickers and sound goes off momentarily as if it is trying to connect but then swaps back to just being on the laptop after a few seconds.
Basically does anyway know if there is a way I can reset the resolution without being connected to the TV?