A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
If you go to File >> Options >> Advanced and tick "Disable Hardware Graphics Acelleration" does that make any difference?
In Slide Show > Set Up show make sure you have the show set to play on the primary monitor.
Do you have a local default printer driver installed (XPS is fine if you don't have a printer)