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—SelectStart > Shut down.

Windows XP—SelectStart > 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