HP Mini 1103 - Manual (Page 32)

If the computer is unresponsive and you are unable to use the preceding shut down procedures, try the
following emergency procedures in the sequence provided:
● Press ctrl+alt+delete . Then, click Shut down.
● Slide and hold the power switch for at least 5 seconds.
● Disconnect the computer from external power and remove the battery.
24 Chapter 3 Power management