HP ProBook 5220m Notebook PC - Manual (Page 11)

Power button
Component Description
Power button ● When the computer is off, press the button to turn on the computer.
● When the computer is on, press the button to shut down the
computer.
● When the computer is in the Suspend state, press the button briefly
to exit Suspend.
● When the computer is in Hibernation, press the button briefly to exit
Hibernation.
If the computer has stopped responding and operating system shutdown
procedures are ineffective, press and hold the power button for at least
5 seconds to turn off the computer.
To learn more about your power settings, select Computer > Control
Center > System > Power Management.
Identifying hardware 3