Displaying System Information; Decreasing Screen Brightness; Increasing Screen Brightness; Switching The Screen Image - HP XA664AA Reference Manual

Function
Display system information.
Decrease screen brightness
Increase screen brightness
Switch the screen image between computer display and
external display.
Launch Internet Explorer
Mute speaker sound.
Decrease speaker sound.
Increase speaker sound.
Play previous track.
Play, pause, or resume optical disc.
Play next track.
To use a hotkey command on the computer keyboard, follow either of these steps:
●
Briefly press the
– or –
●
Press and hold down the
release both keys at the same time.

Displaying system information

Press fn+esc
version number.
System information is displayed. The version of the system BIOS (basic input-output system) is
labeled as the BIOS date. On some computer models, the BIOS date is displayed in decimal format.
The BIOS date is sometimes called the system ROM version number.

Decreasing screen brightness

Press fn+f2
incrementally.

Increasing screen brightness

Press fn+f3
incrementally.

Switching the screen image

Press fn+f4
example, if a monitor is connected to the computer, pressing
computer display to monitor display to simultaneous display on both the computer and the monitor.
22 Chapter 5 Pointing devices and keyboard
fn key, and then briefly press the second key of the hotkey command.
fn key, briefly press the second key of the hotkey command, and then
to display information about system hardware components and the system BIOS
to decrease screen brightness. Hold down the hotkey to decrease the brightness level
to increase screen brightness. Hold down the hotkey to increase the brightness level
to switch the screen image among display devices connected to the system. For
Hotkey
fn+esc
fn+f2
fn+f3
fn+f4
fn+f6
fn+f7
fn+f8
fn+f9
fn+f10
fn+f11
fn+f12
fn+f4 alternates the screen image from