Windows
Mouse would not pair and the third display would not extend
The mouse was not being recognized, and the laptop could only mirror one external screen instead of using a separate third display. The technician paired the mouse without the dongle and got the third screen working.
Killed once by someone from XL.net, on 2026-06-12.
Affects
Versions
- Windows
Hardware
- wireless mouse
- external monitors
- laptop
What you see
- Mouse not recognized by the computer
- Only one external monitor could mirror the laptop instead of using three separate screens
When it shows up
A Windows laptop can see external monitors, but the display stays in mirror mode and a mouse will not connect normally.
You are in this case if:
- The setup only mirrors one external screen
- The mouse works after pairing without the dongle
1 fix below
The steps that killed it
The steps are behind a quick check
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Someone from XL.net killed this on a Windows computer on 2026-06-12. It is written up from that one repair, so it cites no outside page.