Sony PCGC1MW Manual

Page of 146
  VAIO® Computer User Guide
38
2
Press the power button to return to normal mode.
Notes on power saving modes
When returning from Hibernate mode (by pressing the power button 
momentarily) the system status stored on the hard disk is erased and the 
computer starts normally.
Standby uses more power than Hibernate.
Standby requires less time than Hibernate to return to normal mode.