HP ENVY Sleekbook 4-1110us - Manual (Page 60)

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 , select Power, and then select Shut Down.
● Press and hold the power button for at least 5 seconds.
● Disconnect the computer from external power.
50 Chapter 6 Managing power