That is the key I was referring to - was just wondering if it had accidentally been switched over.

Perhaps you should go through the set up again to see if the tv monitor is recognised

Method 1: Connect a Standard VGA display to the computer and check if it works

a. Click Start and click Control Panel and then click on Personalization.

b. Click on Display Settings.

c. Under Display Settings click the Settings Tab.

d. Then Select the monitor display from the drop down under Display.

e. Put a checkmark against “Extend my Windows Desktop onto this monitor”.

f. Click on Apply and then click the Advanced Button.

g. Click the Graphics card tab that is installed on the computer, for example, Intel Graphics media Accelerator, and then click the Graphics properties button under Advanced.

h. Next, under the Display devices select Television as Single Display and under Multiple Display Select primary device as television and secondary device as notebook or laptop.

i. Click on Ok on all the windows to close the Display properties.