Hardware Issue - External Monitor or Display Issues

Use this when an external monitor or display setup is not working as expected.

Quick checks

• Confirm the monitor has power and is turned on.
• Confirm the video cable is fully connected at both ends.
• Confirm the monitor is set to the correct input/source.
• Disconnect and reconnect docks, adapters, and cables.
• Restart the computer with the display connected.

Steps to try

1. Try a different cable or port if one is available.
2. Connect the monitor directly to the computer instead of through a dock, if possible.
3. On Windows, press Windows + P and confirm Duplicate or Extend is selected.
4. On Mac, open System Settings > Displays and check whether the display is detected.
5. Test the monitor with another computer if available.

Submit a ticket when

• The display is not detected after cable/port checks.
• The display works on another computer but not yours.
• Resolution, scaling, or flickering makes the display unusable.
• The issue started after an update, dock change, or cable change.

Official references

• Troubleshoot external monitor connections in Windows
• If your external display is dark or low resolution