While using my HP EliteBook 850 with Windows 10, sometimes it appears that the Fn key status is inverted (pressed/unpressed) until i visit
Keyboard Properties via
All Tasks and test the repetition rate.
For example, typing "Fn key locked" results in "Fn 2ey 36c2ed".
Why does this happen, and how can i stop that? This page seems to recommend disabling the key in the BIOS, but i'd still like to control the volume and keyboard lights.