HP EliteBook 840 G3 - Manual (Page 20)

Buttons, speakers, and fingerprint reader
Component Description
(1) Power button ● When the computer is off, press the button to turn on the
computer.
● When the computer is on, press the button briefly to initiate
Sleep.
● When the computer is in the Sleep state, press the button
briefly to exit Sleep.
● When the computer is in Hibernation, press the button
briefly to exit Hibernation.
CAUTION: Pressing and holding down the power button will
result in the loss of unsaved information.
If the computer has stopped responding and Windows® shutdown
procedures are ineffective, press and hold the power button for at
least 15 seconds to turn off the computer.
To learn more about your power settings, see your power
options. From the Start screen, type power, select Power and
sleep settings, and then select Power and sleep from the list of
applications.
(2) Speakers Produce sound.
(3) Wireless button Turns the wireless feature on or off but does not establish a
wireless connection.
10 Chapter 2 Getting to know your computer