Setting up a looping slideshow in PowerPoint allows your slides to automatically advance after a specified time and repeat once the slideshow ends. Here’s how to create a continuous, looping presentation:

• Open your PowerPoint presentation.
• Go to the [Slide Show] tab and click [Set Up Slide Show].

• In the dialogue box that appears, check [Loop continuously until ‘Esc’], then click [OK].

• In the slide preview panel on the left, select your first slide, then press and hold [Shift] and click the last slide to select all slides.
• Go to the [Transitions] tab, uncheck “On Mouse Click,” then check “After.” Use the up and down arrows to set how long you want each slide to display.
•  

When you start the slideshow, it will automatically advance through all slides and loop back to the beginning once it reaches the end.