Whether you're running a PowerPoint 2013 presentation by hand or playing back a slideshow with recorded timings, set the show to loop continuously to restart it automatically every time it ends. To loop a slideshow once rather than indefinitely, create a custom slide show instead.
Loop Continuously
Step 1: Set Up Slide Show
Open the Slide Show tab and click Set Up Slide Show.

Tip
Set Up Slide Show options only apply to the current PowerPoint file.
Step 2: Turn on Looping
Check Loop Continuously Until 'Esc' and click OK. When you run the show, the presentation jumps back to the first slide rather than ending after the last slide. To end the show at any point, press Esc.

Tip
- When looping a slideshow with recorded timings, remember to include a pause after the last slide comes up in order to prevent the show from starting over too quickly.
- To use timings, make sure Using Timings, if Present is selected in the show options.
Loop Once
PowerPoint's custom show feature provides a way to create a show out of any of the presentation's slides, placed in any order. By choosing all of the slides and then repeating the same slides, you effectively create a one-time loop.
Warning
When using this method, do not turn on Loop Continuously Until 'Esc.'
Step 1: Open Custom Shows
Open the Slide Show tab, click Custom Slide Show and choose Custom Shows.

Step 2: Create a Custom Show
Click New to build a custom show.

Step 3: Add Slides to the Show
Check the boxes by each of the slides in the presentation and press Add to add them to the custom show. Check each of the boxes a second time and press Add again to add the second loop of slides to the show. Click OK when finished, and then click Close on the Custom Shows window.

Tip
- For additional loops, check off and add the slides as many times as needed.
- To exclude a title card from subsequent loops, only check the first slide the first time around.
Step 4: Play the Custom Show
Click Custom Slide Show and choose your custom show to play it. Playing the presentation normally — by using the From Beginning button or selecting F5 — won't include the custom show's extra loop.
