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How to Black Out Selected Displays During a PowerPoint Presentation

Guest Writer Sep 25, 2026 868 views

Question details

The user wants to show a presentation on specific classroom displays while keeping other outer screens black or displaying a blank image.

How to Black Out Selected Displays During a PowerPoint Presentation

Product: Microsoft PowerPoint
Device & OS: not provided
Scenario: Presenting in a room with multiple mirrored displays where only a selected few should display the presentation slides.
Observed behavior: PowerPoint natively mirrors the presentation to all connected displays identically, without built-in features to independently control or black out individual screens.

Before you start

Verify your physical display connections and available hardware. Because PowerPoint does not offer native software controls for independent display routing, you will need physical hardware solutions like HDMI switches or a secondary PC.

Solution 1Recommended

Use an HDMI Switch or Splitter

Since PowerPoint mirrors all screens identically, using an HDMI matrix switch allows you to physically cut the video feed to specific monitors.

A hardware-based approach is the most reliable way to achieve independent screen control. By putting a physical switch between your computer and the displays, you can route the signal only to the screens you want active.

Connect an HDMI Matrix Switch

Connect the HDMI output from your primary presentation computer directly into the input port of a multi-output HDMI matrix switch.

Route Cables to Displays

Connect individual HDMI cables from the switch's output ports to each monitor or projector in the classroom.

Toggle the Outer Display Feeds

Use the physical buttons or remote control of the HDMI switch to turn off or block the video feed to the outer screens, effectively blacking them out while keeping the main screens active.

Hardware flexibility: An HDMI matrix switch allows you to instantly change which screens are active with a push of a button, without interrupting the presentation software.

Solution 2

Set Up a Secondary Computer for Blank Output

If you lack advanced HDMI switching hardware, a secondary PC can feed a permanent black screen to the unwanted monitors.

Solution 3

Submit a Feature Request to Microsoft

If you prefer a software-based solution in the future, you can suggest this capability to the Microsoft development team.

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Try WPS Presentation for Your Slideshow Needs

While advanced multi-monitor routing requires specific hardware solutions, WPS Presentation provides a highly compatible, free, and lightweight alternative to Microsoft PowerPoint for creating and delivering stunning slideshows. Enjoy a familiar interface without a heavy subscription.

1. Download WPS Office: Visit the official WPS website and download the free installer for your operating system.
2. Install and Launch: Follow the on-screen setup instructions to install the software, then launch WPS Presentation.
3. Open Your Files: Open your existing PowerPoint files directly in WPS to seamlessly continue your work.

Highly compatible with Microsoft PowerPoint (.ppt, .pptx) formatsLightweight software that runs smoothly on low-spec hardwareCompletely free to use with rich built-in presentation templatesFamiliar user interface for seamless migration from Microsoft Office

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Frequently Asked Questions

Can I use a PowerPoint shortcut key to black out all screens?

Yes, pressing the 'B' key during an active PowerPoint presentation turns the entire slide black across all mirrored screens. Pressing 'B' again resumes the presentation. However, this affects all displays simultaneously and cannot target specific screens.

Does Presenter View allow me to select which screens show the slides?

No. Presenter View separates your private control interface from the audience view, but the audience view itself will still be mirrored identically across all connected audience displays.

Can I use dual monitors and only present on one?

Yes. By changing your operating system's display settings from 'Duplicate' to 'Extend these displays', you can choose to run your slideshow on one specific monitor while using the other screen for different tasks or leaving it empty.

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