Basic Operation
Operating Your Computer
30 Startup Guide
To use the Fn hot keys
The combination of the Fn key plus another key creates a hot key—a shortcut key
sequence—for various system controls. To use a hot key, press and hold Fn, press the
appropriate second key, then release both keys.
This hot key Does this
Fn+F1 Decreases the display brightness.
Fn+F2 Increases the display brightness.
Fn+F5 Toggles among the built-in display, an external display, and simultaneous display on
both.
Fn+F7 Audio mute.
Fn+F8 Toggles the built-in keypad on and off. Does not affect an external keyboard. If Num
Lock is on, then the numeric functions are active; otherwise, cursor control is active (as
marked on an external keyboard).
Fn+F12 Enters Hibernate mode.
Fn+NumLock Toggles Scroll Lock on and off.
External PS/2 keyboards support only Fn+F5, Fn+F7, and Fn+F12. To use these, press
and hold left CTRL+left ALT, press the appropriate second key, then release both keys.
A USB keyboard does not support Fn hot keys.
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