Sony VAIO PCG-R505JLK User Manual page 36

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The "Save to Disk Manager" window appears, and then the notebook enters Hibernate
mode.
Do not move the notebook until its power indicator light turns off.
To return to Normal mode
To return to normal mode, turn on the notebook by pressing the power button.
The notebook returns to its previous state.
When returning from Hibernate mode, the system status stored on the hard disk is
erased and the notebook starts normally if you press the power button and hold for
more than four seconds.
Time required to return to normal mode
Standby requires less time than Hibernate to return to normal mode.
Power consumption
Standby uses more power than Hibernate.
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