Manual Hibernation Mode
Hibernation differs from standby. When the PC enters standby, it is still active and able to respond to scheduled activities. When the PC enters hibernation, it copies everything currently displayed and on the desktop to the hard disk and then turns itself off.
1 Click Start 
on the taskbar.
2 Click Turn Off Computer at the bottom of the menu.
3 Press the Shift key on the keyboard and click Hibernate. The PC saves everything that is in computer memory to the hard disk, turns off the monitor and the hard disk, and then turns itself off.
4 When you want to use the computer again, press the On button on the front of the PC. The PC returns everything (programs, folders, and documents) to the screen.
If the computer does not work properly when you wake it from hibernation, restart the PC.
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When you press Shift, the Stand By button changes to Hibernate. If Hibernate is not present, you first need to set up your PC for hibernation by setting the Power Options in the Control Panel.
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Do not use hibernate if you have scheduled TV recordings in Media Center.
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