HP ProBook 640 G1, 645 G1, 650 G1, and 655 G1 Notebook PCs - Maintenance and Service Guide

Table Of Contents
Buttons and fingerprint reader (select models only)
NOTE: Your computer may look slightly different from the illustration in this section.
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.
To learn more about your power settings:
Windows 10: Type power in the taskbar search box, and then
select Power and sleep settings.
– or –
Right-click the Start button, and then select Power Options.
Windows 8: See your power options. From the Start screen, type
power, select Settings, and then select Power Options.
Windows 7: See your power options. Select Start > Control Panel
> System and Settings > Power Options.
(2) Speakers (2) Produce sound.
Buttons and fingerprint reader (select models only) 11