HP ProBook User Guide - Windows XP

Lights
NOTE: Refer to the illustration that most closely matches your computer.
Component Description
(1) Wireless lights (2)*
Blue: An integrated wireless device, such as a wireless local
area network (WLAN) device, the HP Mobile Broadband
Module (select models only), and/or a Bluetooth® device, is
on.
Amber: All wireless devices are off.
(2)
Power lights (2)
On: The computer is on.
Blinking: The computer is in Standby.
Off: The computer is off or in Hibernation.
(3) Battery light
Amber: A battery is charging.
Turquoise: A battery is close to full charge capacity.
Blinking amber: A battery that is the only available power
source has reached a low battery level. When the battery
reaches a critical battery level, the battery light begins blinking
rapidly.
Off: If the computer is plugged into an external power source,
the light turns off when all batteries in the computer are fully
charged. If the computer is not plugged into an external power
source, the light stays off until the battery reaches a low
battery level.
(4) Drive light
Blinking turquoise: The hard drive or optical drive (select
models only) is being accessed.
Amber: HP 3D DriveGuard has temporarily parked the hard
drive.
Identifying hardware 3