LG LS50 User Manual page 42

Caution
If the Drive in use indicator is on, do not turn off the computer, as doing so may
damage the data being read from or written to the drive.
Warning
If Windows does not shut down correctly, press and hold the power switch for more
than 5 seconds; the system will shut down.
Turning off the computer this way may damage the system. It is recommended that
you always turn off the computer by choosing Shut down in the Start menu.
If the computer does not shut down correctly while running applications, the data in
the hard disk drive may be damaged.
If a program does not respond, press the Ctrl+Alt+Delete combination to start the
Task manager; then quit the program or restart the system.
If Windows or program file is damaged by shutting down the system incorrectly,
reinstall the program. The user is responsible for the loss of data caused by incorrect
use of the computer.
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