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4 Power management
NOTE: A computer may have a power button or a power switch. The term power button is used
throughout this guide to refer to both types of power controls.
NOTE: Windows 7 uses Sleep and Windows XP uses Standby. The term Sleep is used throughout
this guide to refer to both. Differences between the operating systems that affect any of the
procedures are noted.
Shutting down the computer
CAUTION: Unsaved information is lost when the computer shuts down.
The Shut down 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 USB port
●
When the computer will be unused and disconnected from external power for an extended
period
Although you can shut down the computer with the power button, the recommended procedure is to
use the Windows Shut down command:
NOTE: If the computer is in the Sleep state or in Hibernation, you must first exit Sleep or
Hibernation before shutdown is possible.
1. Save your work and close all open programs.
2. Windows 7—Select Start > Shut down.
Windows XP—Select Start > Turn Off Computer > Turn Off.
NOTE: If you have been registered to a network domain, the button you click is called Shut
Down instead of Turn Off Computer.
Shutting down the computer 21