Sony PCG-R505ELP VAIO User Guide (primary manual) User Manual page 29

Hibernate mode
In the Hibernate mode, the state of the system is saved on the hard drive and power is turned off. The power indicator is
off in this mode.
To activate Hibernate mode
1.
Press the key combination Fn + F12, or press the power button and release it immediately. The "Save to Disk
Manager" window appears and the computer enters Hibernate mode.
Do not move the computer until its power indicator turns off.
Pressing the power button and releasing it immediately caused prior computer systems to enter Standby mode.
2.
Press the power button to return to normal mode.
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