Try this as I have just set up mine. Make sure TV is
connected via S-Video from laptop to your TV jacks or
scart connector.
Right click on desktop, go to properties, go to settings
and then click on advanced. Select Displays in the top
tabs. You should have a TV setup in here. Click on the TV
on off button and setup from there. You have options for
PAL, NTSC etc. Good luck