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To test the AC adapter:
1.
Shut down the computer.
2.
Remove the battery from the computer.
3.
Connect the AC adapter to the computer, and then plug it into an AC outlet.
4.
Turn on the computer.
●
If the power lights turn on, the AC adapter is working properly.
●
If the power lights remain off, check the connection from the AC adapter to the computer
and the connection from the AC adapter to the AC outlet to make sure the connections are
secure.
●
If the connections are secure and the power lights remain off, the AC adapter is not
functioning and should be replaced.
Contact customer support for information on obtaining a replacement AC power adapter.
Shutting down (turning off) the computer
CAUTION:
before shutting down the computer.
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 or video
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 by briefly pressing the power button.
1.
Save your work and close all open programs.
2.
From the Start screen, point to the upper-right or lower-right corner of the screen.
3.
When the charms list opens, click Settings. Click the Power icon, and then click Shut down.
If the computer is unresponsive and you are unable to use the preceding shutdown procedures, try
the following emergency procedures in the sequence provided:
●
Press ctrl+alt+delete, and then click 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.
●
On models with a user-replaceable battery, remove the battery.
38
Chapter 6 Managing power
Unsaved information is lost when the computer shuts down. Be sure to save your work
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