Thanks for getting back to me, ok so here's what I've tried in the last 24hrs;
1: searched for HDMI settings on the laptop every where I could think of, doesnt seem to have any (even though it definitely has a HDMI port)
2: I installed the latest version of the graphics card SW/ driver
still no joy and no HDMI settings that I can see either.
3: I've also tried in control panel personalise and to the left connect to a projector or other external display. It detects when I connect by VGA but not by HDMI.
4: I tried shutting down the LT and the TV then connecting the two booting the LT and then the TV, still no joy.
5: I've never used the HDMI port so checked it for dust and dirt (seems fine)
6: I've tried every combination of port on the TV in case some how they were labelled incorrectly, again no joy.
It's odd when I plug the HDMI cable in nothing happens on the TV or LT, the laptop just does nothing, when I use the F keys to get it to switch display it only shows my main display to switch to.
Hope you can help : )