Sony PCG-F630 - Manual (Page 48)

Using Power Saving Modes 33
Press Fn+Esc or Fn+F12. The screen turns off, and then the computer enters
Hibernation mode.
To return to normal mode
Turn on the computer by pressing the power button. The computer returns to
its previous state.
❑ Time to return to Normal mode
Standby requires less time to return to normal mode than Hibernation.
❑
Power consumption
Standby uses more power than Hibernation.
Do not move the computer until the power indicator turns off.
When returning from Hibernation mode, the system status stored on the hard disk is
erased and the computer starts normally if you press the power button and hold for
more than four seconds.