What happens if I press and hold the power button on the ProBook 440 G3?
Pressing and holding the power button results in loss of unsaved information. If the computer has stopped responding and shutdown procedures are ineffective, press and hold the power button for at least 5 seconds to turn off the computer.
From the official HP ProBook 440 G3 Notebook PC manual, page 12
Have a follow-up question?
Answers from the official manual.
Common questions