HP ProBook 640 G2 Maintenance And Service Manual page 28

Component
(3)
(4)
18 Chapter 2 External component identification
Battery light
Drive light
Description
● Blinking: The computer is in the Sleep state, a power-
saving state. The computer shuts off power to the
display and other unneeded components.
● Off: The computer is off or in Hibernation.
Hibernation is a power-saving state that uses the
least amount of power.
When AC power is connected:
White: The battery charge is greater than 90 percent.
●
● Amber: The battery charge is from 0 to 90 percent.
● Off: The battery is not charging.
When AC power is disconnected (battery not charging):
● Blinking amber: The battery has reached a low
battery level. When the battery has reached a critical
battery level, the battery light begins blinking
rapidly.
Off: The battery is not charging.
●
● Blinking white: The hard drive is being accessed.
Amber: HP 3D DriveGuard has temporarily parked the
●
hard drive.