On my Windows 10 laptop, here is what happens. Anywhere, it's as if the down key was typed at an irregular rythm. So on the desktop, the selected icon keeps changing downwards. In Word, the caret goes down by itself. But even more strangely, if I type the down key, the caret goes up! Am I in the twilight zone?
I tried this:
- I typed the down key several times, gently and hardly (in case it was kind of stucked).
- Scanned the laptop with Malwarebytes. It found and quarantined 19 items, but the issue persists after reboot.
- I fired the onscreen keyboard. It works correctly if I click on the arrow keys.
- I uninstalled the keyboard driver. It asked for a reboot. After the reboot, it reinstalls automatically and the problem persists.
