You can burn the PowerPoint presentation to DVD, so you can play it with a DVD player. Use a burning tool like Moyea PPT to DVD Burner. It can preserve everything from your original PowerPoint onto a blank DVD disc, including animations, sounds and etc.
The download site: http://www.dvd-ppt-slideshow.com/
There are 3 editions in the PowerPoint to DVD Burner Family: the Pro, http://www.dvd-ppt-slideshow.com/ppt_to_dvd/
the Lite, http://www.dvd-ppt-slideshow.com/powerpoint-to-dvd/
and the Edu, http://www.dvd-ppt-slideshow.com/ppt-to-dvd-education/
Choose the one that fits to you.
Then follow the how-to:
1. Install and run Moyea PPT to DVD Burner. Insert a blank DVD to your PC.
2. Import your PowerPoint file and select the output as Standard DVD or High Definition DVD.
3. Customize details for the output DVD slideshow, like adding logos, sound tracks, and DVD menus for playback with a DVD player. Then click Start to burn the presentation to DVD.
That's it! After conversion, you can take out the DVD and playback on a DVD player attached to TV, needless of a projector!
Hope it can help!