HP 421 Notebook-PC - Manual (Page 44)

Function Hotkey
Display system information. fn+esc
Open Help and Support. fn+f1
Decrease screen brightness. fn+f2
Increase screen brightness. fn+f3
Switch the screen image. fn+f4
Initiate Sleep. fn+f5
Initiate QuickLock fn+f6
Launch Web browser. fn+f7
Launch printer. fn+f8
To use a hotkey command on the computer keyboard, follow either of these steps:
● Briefly press the fn key, and then briefly press the second key of the hotkey command.
– or –
● Press and hold down the fn key, briefly press the second key of the hotkey command, and then
release both keys at the same time.
Displaying system information
Press fn+esc to display information about system hardware components and the system BIOS
version number.
In the Windows fn+esc display, the version of the system BIOS (basic input-output system) is
displayed 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.
32 Chapter 3 Pointing devices and keyboard