Resetting the Computer
You may have to reset (reboot) your computer on some occasions when an
error occurs and the program you are using hangs up.
If you are sure the operation has stopped and you cannot use the "restart"
function of the operating system, reset the computer
Reset the computer by any of these methods:
Press Ctrl+Alt+Del on the keyboard. This opens the Ctrl-Alt-Del screen
where you can select actions including Restart.
If the above action does not work, press and hold the power button for
more than 5 seconds to force the system to turn off. Then turn on the
power again.
92