shows desktop, but projector just shows desktop theme only

[Guest]

My laptop monitor shows the powerpoint presentation slide, however my
projector only shows the desktop theme. It does not show the powerpoint
presentation slide. If I toggle so that the laptop monitor is blank, then
the projector shows the powerpoint presentation slide.

 

[Guest]

This is a feature of your laptop. It's toggling between displays. On mine
if you toggle a third time, it shows the presentation on both screens.

See: http://www.rdpslides.com/pptfaq/#Video_Projectors_and_Dual_Monitors

 

[Derek]

And if that doesn't help, turn off your Extended Desktop