HP Notebook pc User Manual page 47

When you need to replace the battery or access components inside the computer
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When you are connecting an external hardware device that does not connect to a USB or video
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port
When the computer will be unused and disconnected from external power for an extended
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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. Select Start > 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 Shut down icon on the display.
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Press and hold the power button for at least 5 seconds.
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Disconnect the computer from external power.
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Remove the battery.
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Shutting down the computer 37