Lenovo ThinkPad L450, User Manual

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Power-saving modes
There are several modes that you can use at any time to conserve power. This section introduces each
mode and gives tips on the effective use of battery power.
• Screen blank mode (for Windows 7 only)
The computer display requires considerable battery power. To turn off the power to the display and make
the computer enter screen blank mode, right-click the battery-gauge icon in the windows notification area
and select
Power off display .
• Sleep mode
In sleep mode, your work is saved to memory, and then the storage drive and the computer display are
turned off. When your computer wakes up, your work is restored within seconds.
To put your computer into sleep mode, do the following:
– For Windows 7 : Open the Start menu, then click the arrow next to the Shut down button. Click
Sleep from the menu displayed.
– For Windows 8.1 : Go to the Start screen by pressing the Windows key , click the power icon
, then click Sleep .
– For Windows 10: Open the Start menu, click Power , and then click Sleep .
• Hibernation mode
By using this mode, you can turn off your computer completely without saving files or exiting any
programs that are running. When the computer enters hibernation mode, all open programs, folders, and
files are saved to the storage devices, and then the computer turns off.
To put the computer into hibernation mode, do the following:
– For Windows 7 : Open the Start menu, then click the arrow next to the Shut down button. Click
Hibernate from the menu displayed.
– For Windows 8.1 and Windows 10 : Define what the power button does first, then press the power
button to put the computer into hibernation mode. For more information, see “Front view” on page 1.
If you put your computer into hibernation mode with the wake-up function disabled, the computer does
not consume any power. The wake-up function is disabled by default. If you put your computer into
hibernation mode with the wake-up function enabled, the computer consumes a small amount of power.
To enable the wake-up function, do the following:
1. Go to Control Panel and click System and Security .
2. Click Administrative Tools .
3. Click Task Scheduler . If you are prompted for an administrator password or confirmation, type the
password or provide confirmation.
4. From the left pane, select the task folder for which you want to enable the wake-up function. The
scheduled tasks are displayed.
5. Click a scheduled task, and then click the Conditions tab.
6. Under Power , select the check box for Wake the computer to run this task .
• Wireless off
When you are not using the wireless features, such as Bluetooth or wireless LAN, turn them off. This helps
conserve power. To turn off the wireless features, press the wireless-radios control key .
Handling the battery
This system supports only batteries specially designed for this specific system and manufactured by Lenovo
or an authorized builder. The system does not support unauthorized batteries or batteries designed for other
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User Guide