HP Pavilion m6-1002xx Entertainment Notebook PC - Manual (Page 58)

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