Panel Power Off/On; System Auto Off - Toshiba Qosmio X500 User Manual

Refer also to the sections
in Chapter 3,
Hot keys
You can use hot keys Fn + F3 to enter Sleep Mode and Fn + F4 to enter
Hibernation Mode. Refer to Chapter 5,

Panel power off/on

You can set up your computer so that power turns off automatically when
you close the display panel. When you open the panel, power turns on in
Sleep Mode or Hibernation Mode but not in boot mode.
If the panel power off function is enabled and you use Shut down
Windows, do not close the display until the shut down function is complete.

System Auto Off

This feature turns the system off automatically if it is not used for a set
duration. The system shuts down in Sleep Mode or Hibernation Mode in
Windows.
User's Manual
Turning on the power
Getting Started.
Power and Power-Up Modes
and Turning off the power
The Keyboard for details.
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