Chapter 1. Getting to know your computer
Keyboard function keys
You can access certain system settings quickly by pressing the appropriate function keys.
G400s/G405s/G400s Touch
: Mutes/unmutes the sound.
: Decreases the volume level.
: Increases the volume level.
Closes the currently active 
: window.
Refreshes the desktop or the 
: currently active window.
Enables/disables the
: touchpad.
Enables/disables Airplane 
: mode.
Displays all currently active 
: apps.
Turns on/off the backlight of 
: the LCD screen.
Opens the interface for the display device switch to
: select this notebook or an external display.
Decreases display
: brightness.
: Increases display brightness.
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