Toshiba Satellite L855 - Manual (Page 25)

Data save in Hibernation Mode
When you turn off the power in Hibernation Mode, the computer will take a
moment to save the current data in memory to the Hard Disk Drive.
After you turn off the computer, and the content of memory has been saved
to the Hard Disk Drive, turn off the power to any peripheral devices.
Do not turn the computer or devices back on immediately. Wait a moment
to let all capacitors fully discharge.
Restarting the computer
Certain conditions require that you reset the computer, for example if:
You change certain computer settings.
An error occurs and the computer does not respond to your keyboard
commands.
If you need to restart the computer, there are three ways this can be
achieved:
Click Start. Point to the arrow icon ( ) and then select
Restart from the menu.
Press CTRL, ALT and DEL simultaneously (once) to display the menu
window, and then select Restart from the Shut down options.
Press the power button and hold it down for five seconds. Once the
computer has turned itself off, wait between ten and fifteen seconds
before turning the power on again by pressing the power button.
C850/C850D/L850/L850D
User's Manual 1-10