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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.
● 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.
48 Chapter 6 Managing power