Power management, Shutting down (turning off) the computer, Setting power options – HP EliteBook 840 G3 User Manual

Page 44: Using power-saving states, 6 power management, 6power management

Power management

NOTE:

A computer may have a power button or a power switch. The term power button is used throughout

this guide to mean both types of power controls.

Shutting down (turning off) the computer

CAUTION:

Unsaved information is lost when the computer shuts down.

The shutdown command closes all open programs, including the operating system, and then turns off the

display and computer.
Shut down the computer under any of the following conditions:

●

When you need to replace the battery or access components inside the computer

●

When you are connecting an external hardware device that does not connect to a Universal Serial Bus

(USB) port

●

When the computer will be unused and disconnected from external power for an extended period

Although you can turn off the computer with the power button, the recommended procedure is to use the

Windows shutdown command:

NOTE:

If the computer is in the Sleep state or in Hibernation (select products only), you must first exit Sleep

or Hibernation before shutdown is possible by briefly pressing the power button.

Save your work and close all open programs.

Select the Start button, select the Power icon, and then select Shut down.

If the computer is unresponsive and you are unable to use the preceding shutdown procedure, try the

following emergency procedures in the sequence provided:

●

Press

ctrl

alt

delete

. Select the Power icon, and then select Shut Down.

●

Press and hold the power button for at least 5 seconds.

●

Disconnect the computer from external power.

●

Press and hold the power button for at least 15 seconds.

Setting power options

Using power-saving states

Sleep is enabled at the factory. When Sleep is initiated, the power lights blink and the screen clears. Your work

is saved to memory.

CAUTION:

To reduce the risk of possible audio and video degradation, loss of audio or video playback

functionality, or loss of information, do not initiate Sleep while reading from or writing to a disc or an external

memory card.

Chapter 6 Power management