What is the warning when pressing and holding the power button on the HP ProBook 650 G1?
Pressing and holding down the power button will result in the loss of unsaved information, as noted in the manual's caution. Briefly pressing the power button when the computer is on will initiate Sleep, while briefly pressing it from Sleep or Hibernation will exit those states. (Page 11)
From the official HP Probook 650 G1 Notebook PC manual, page 11
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