FAQ / Classroom Technology

Interactive whiteboard or projector is not working

Cnetso school IT support guide

Interactive whiteboard or projector not working

Use this guide if the board, projector, screen, or classroom display is not showing the computer image.

Image placeholder: Classroom display input/source menu.

Quick checks

  1. Check the display or projector is powered on.
  2. Check the correct input/source is selected.
  3. Disconnect and reconnect the HDMI or USB-C cable.
  4. Restart the classroom PC or laptop.
  5. Try pressing Windows + P and selecting Duplicate.

Raise a ticket with

  • Room number
  • Display/projector model if known
  • Photo of the error or blank screen
  • Whether sound is also affected
Tip: When raising a ticket, include your school, room/location, device name and a screenshot of any error message.
Writer
Created 29-05-2026 23:15
Last update 29-05-2026 23:15
Views 18
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