Want to Loop a PPT endless only on TV, while being able to turn the TV off and on each night w/o breaking the loop

I have a TV that I'd like to endlessly loop a PowerPoint Presentation (M Office 2011, Mac Mini). All is well until I turn off the TV each night (the computer never is turned off and does not sleep) -- when I turn the TV back on in the morning, the presentation is stopped and I have to restart the show. Every morning. Is there a way to prevent the show from stopping when the TV is turned off?