PowerPoint can be set to display slides on any screen and sometimes it gets it wrong. If you start your slide show and the slides appear in the wrong place, or the presenter view gets in the way, you can go back to the settings and make sure it’s set up right:
Stop the slideshow and go back to the PowerPoint window.
Click on the ‘Slide Show’ tab and locate the ‘Monitors’ section.
Change the Monitor from ‘Automatic’ to ‘Primary Display’. This will ensure the slides are sent to the correct monitor and projector.
You can also choose to switch off ‘Use Presenter View’ if you don’t need it.
Read more about PowerPoint presentation settings on the Microsoft website.