Toshiba Satellite M50 (PSM53) - Manual (Page 121)

TOSHIBA M50 6-14
Power and Power-Up Modes
Panel power off/on
This feature makes the computer to enter Hibernation when the display
panel is closed and turns it back on when the display panel is opened.
System automatic Standby/Hibernation
This feature automatically turns off the system in Standby or Hibernation
mode if the computer is not used for a set duration.
Refer to Special features , in Chapter 1, TOSHIBA M50 Features for an
explanation of how to set the duration.
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 completed.