Front - HP ELITEBOOK 840 G4 Maintenance And Service Manual

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Component
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16 Chapter 2 External component identification
Wireless light
Power light
Battery light
Drive light
Description
On: An integrated wireless device, such as a wireless local
area network (WLAN) device and/or a Bluetooth® device, is
on.
NOTE: On some models, the wireless light is amber when
all wireless devices are off.
● On: The computer is on.
● 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.