compute plugged into tv but no projection

[jojosmith123]

i wanted to project something from my computer to my tv. the cables are connected. and only thing that shows up on the tv is the start screen and nothing else. it only shows a power point that i clicked on as a slide show... help!

 

[popatim]

Do you have the tv set to extended mode or clone mode in the laptops OS ?
Which OS is it running? (the laptop)