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

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HP M6 1045DX B5S08UAR#ABA manual