HP EliteBook 840 G2 Notebook PC HP EliteBook 740 G2 Notebook PC HP ZBook 14 G2 Mobile Workstation - Maintenance and Service Guide
Front
Item Component Description
(1) Wireless light  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.
(2) Power light 
●
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.
NOTE: For select models, the Intel Rapid Start 
Technology feature is enabled at the factory. Rapid Start 
Technology allows your computer to resume quickly 
from inactivity.
(3) AC adapter/Battery light
●
White: The computer is connected to external power 
and the battery is charged from 90 to 99 percent.
●
Amber: The computer is connected to external power 
and the battery is charged from 0 to 90 percent.
●
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: The battery is fully charged.
(4) Hard drive light
●
Blinking white: The hard drive is being accessed.
●
Amber: HP 3D DriveGuard has temporarily parked 
the hard drive.
26 Chapter 2 Getting to know your computer ENWW










