HP 625 WS775EA User Manual page 86

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 button.
●
Press and hold the power button for at least 5 seconds.
●
Disconnect the computer from external power and remove the battery.
74 Chapter 5 Power management
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