Notes On Power Saving Modes - Sony Vaio PCG-R505DL Service Manual

Using Power Saving Modes

Notes on power saving modes

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 it for more than 4 seconds.
Standby mode uses more power than Hibernate mode.
Standby mode requires less time than Hibernate mode to return to normal
mode.
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