HP ZBook 15 G3 Base Model Mobile Workstation User Manual download pdf (Page 44)

6 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 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 o 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 o 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, you must rst exit Sleep or Hibernation before

shutdown is possible by briey pressing the power button.

1. Save your work and close all open programs.

2. Select Start > 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. Click the Power icon, and then click Shut Down.

●

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

●

Disconnect the computer from external power.

●

On models with a user-replaceable battery, remove the battery.

Setting power options

CAUTION: Several well-known vulnerabilities exist when a computer is in the Sleep state. To prevent an

unauthorized user from accessing data on your computer, even encrypted data, HP recommends that you

always initiate Hibernation instead of Sleep anytime the computer will be out of your physical possession.

This practice is particularly important when you travel with your computer.

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.

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HP ZBook 15 G3 Base Model Mobile Workstation User Manual Page 44