HP ProBook 4230s Notebook PC - Manual (Page 31)

Hotkey combination Description
fn+f1 Initiates Suspend, which saves your information in system memory. The display and other system
components turn off and power is conserved.
To exit Suspend, briefly press the power button.
CAUTION: To reduce the risk of information loss, save your work before initiating Suspend.
NOTE: If a critical battery level occurs while the computer is in Suspend, the computer initiates
Hibernation and the information stored in is saved to the hard drive.
The function of the fn+f1 hotkey can be changed. For example, you can set the fn+f1 hotkey to
initiate Hibernation instead of Suspend.
fn+f2 Decreases the screen brightness level.
fn+f3 Increases the screen brightness level.
fn+f4 Switches the screen image among display devices connected to the system. For example, if a
monitor is connected to the computer,
fn+f4 alternates the screen image from computer display to
monitor display to simultaneous display on both the computer and the monitor.
Most external monitors receive video information from the computer using the external VGA video
standard. The
fn+f4 hotkey can also alternate images among other devices that are receiving video
information from the computer.
fn_f5 Initiates the QuickLock security feature. QuickLock protects your information by displaying the
operating system Log On window. While the Log On window is displayed, the computer cannot be
accessed until a user password or an administrator password is entered.
NOTE: Before you can use QuickLock, you must set a user password or an administrator
password.
fn+f6 Displays charge information for all installed batteries. The display indicates which batteries are
charging and reports the amount of charge remaining in each battery.
fn+f7 Mutes or restores speaker sound.
fn+f8 Decreases speaker volume.
fn+f9 Increases speaker volume.
fn+f10 Plays the previous track of an audio CD or the previous section of a DVD or a BD.
fn+f11 Plays, pauses, or resumes an audio CD, a DVD, or a BD.
fn+f12 Plays the next track of an audio CD or the next section of a DVD or a BD.
Using the keyboard 21