Using Power Saving Modes - Sony Vaio PCG-745 User Manual

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Sony Notebook Computer User Guide

Using Power Saving Modes

When you use a battery as the source of power for your computer, you
can take advantage of power management settings to conserve battery
life. In addition to the normal operating mode, which allows you to turn
off specific devices, your computer has two distinct power saving modes:
System Suspend and System Hibernation. When using battery power,
you should be aware that the computer automatically enters System
Hibernation mode when the remaining battery charge drops below 7%,
regardless of the power management setting you select.
If your battery level falls to less than 10%, you should either attach the AC adapter to
recharge the battery or shut down your computer and insert a fully charged battery.
Normal Mode
This is the normal state of your computer when it is in use. To save power,
you can turn off a specific device such as the LCD or the hard disk. The
power indicator light is on (green) in this mode.
For details, see "Controlling Power Management" on page 65.
System Suspend Mode
The computer saves the current state of the system in RAM and switches
off power to the CPU. The power indicator light flashes (amber) in this
mode.
To activate System Suspend Mode
Press Fn+Esc, or slide the power switch forward quickly. You can also use
the PowerPanel utility to enter system suspend mode.
If you slide the power switch forward and hold for more than four seconds, the computer
switches off automatically.
To return to Normal Mode
Press any key.
System Hibernation Mode
The state of the system is saved on the hard drive and power is turned off.
The power indicator light is off in this mode.