Lenovo X230 Hotkey function

Recently in the optimization of the X230, for the paranoid tendencies of me, obsessed with the startup time, when the startup item was removed, suddenly found that the speaker button and microphone button abnormal. Searched the mother without fruit, helpless under the system of reloading. Finally, several Lenovo-dependent services and programs were discovered:

Lenovo PM Device "service": This is the basis of all, including Lenovo Hotkey Client Loader, Lenovo Microphone Mute, on screen Display, there is no this, the estimated Device Manager will have a question mark. Installed automatically (ghost).

Lenovo Hotkey Client Loader "service", Lenovo Microphone Mute "service": Automatically installed (ghost) when installed.

On screen display "service": instantly displays the function key press on the display. Drive from Lenovo: Sihotkey[guvu40ww].exe.

In addition, the sound card in the Self-launcher program HD Audio Background process (there are two), can not be disabled, otherwise the Unmute button can only be restarted to Unmute.

Lenovo X230 Hotkey function