Windows
Phantom keyboard and mouse input while docked
A docked laptop was adding extra keyboard and mouse inputs, including numbers changing and windows switching on their own. The technician found nothing suspicious, cleaned up startup items, installed pending system/driver/firmware updates, ran Disk Cleanup, and the issue had not returned at follow-up.
Killed once by someone from XL.net, on 2026-07-13.
Affects
Hardware
- laptop dock
- wired keyboard
- wired mouse
What you see
- Extra inputs appear that the user did not make
- Numbers change unexpectedly
- Windows switch on their own
Why it happens
Suspected Suspected out-of-date system, driver, or firmware state together with startup-item clutter; nothing harmful or suspicious was found during the checks.
When it shows up
A Windows laptop only shows phantom keyboard or mouse input while connected to a dock and the input devices are wired rather than wireless.
You are in this case if:
- The problem happens only when the laptop is on the dock
- Wired keyboard and wired mouse are in use
- No wireless input devices are involved
1 fix below
The steps that killed it
The steps are behind a quick check
There are two ways in and both take a few seconds. Signing in opens the steps on every bug page; so does reading the picture.
Or answer this
Drawing a picture for you.
Can't read it? Sign in instead.
Someone from XL.net killed this on a Windows computer on 2026-07-13. It is written up from that one repair, so it cites no outside page.