HP ProBook 6555b Notebook-PC User Manual
Page 87
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
. Then, select Shut Down > Turn Off.
●
Press and hold the power button for at least 5 seconds.
●
Disconnect the computer from external power and remove the battery.
Shutting down the computer
77
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