User's Manual

Managing Power 3-9
When you use the hibernation feature, you do not have to close the
applications. The computer stores the state of your computer to a file on
the hard disk and then shut down. The next time you turn on your
computer, you return to exactly where you left off.
Manual Power Management
You can manually initiate hibernation at any time by pressing the power
button and releasing it in less than 4 seconds with the system on.
Repeat the action to wake up the system under hibernation.