Power Management; Screen Blank Mode; Sleep Mode; Hibernation Mode - Lenovo THINKPAD E40 Hardware Maintenance Manual

Power management

To reduce power consumption, the computer has three power management modes:
screen blank, sleep, and hibernation.

Screen blank mode

To put the computer into screen blank mode, do as follows:
1. Right-click the Power Manager Battery Gauge in the task bar.
2. Select Power off display.

Sleep mode

When the computer enters sleep mode, the following events occur in addition to
what occurs in screen blank mode:
v The LCD is powered off.
v The hard disk drive is powered off.
v The CPU stops.
To enter sleep mode, do as follows:
1. Click Start.
2. Click the triangle mark on the right side of the Shut down icon; then select
To return from sleep mode, press the Fn key.

Hibernation mode

By using this mode, you can turn off your computer completely without saving
files or exiting from any applications that are running. When you enter
hibernation, all open applications, folders, and files are saved to the hard disk, and
then the computer turns off.
To enter hibernation mode, do as follows:
1. Click Start.
2. Click the triangle mark on the right side of the Shut down icon; then select
To return from hibernation mode, press the power button for more than 4 seconds.
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ThinkPad Edge 14", Edge 15", E40, and E50 Hardware Maintenance Manual
Sleep.
Hibernate.