Dell Inspiron 20 (3048, Early 2014) - Manual (Page 96)

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Power Management
Configuring the Power Button Behavior
To configure the power button behavior:
Windows 8.1
1. Right-click anywhere on the Start screen.
2. Click All apps at the bottom-right corner of the screen.
3. Under Windows System, click Control Panel.
4. If your Control Panel is displayed by Category, click the View by:
drop-down and select Small icons or Large icons.
5. Click Power Options.Choose what you want your computer to do when
you press the power button from the drop-down menu next to When I
press the power button.
You may choose different option when your computer is running on
battery and when it is connected to a power adapter.
6. Click Save changes.
Windows 7
1. Click Start → Control Panel → Power Options.
2. Click Choose what the power buttons do.
3. Choose what you want your computer to do when you press the power
button from the drop-down menu next to When I press the power
button.
You may choose different option when your computer is running on
battery and when it is connected to a power adapter.
4. Click Save changes.
Improving Battery Life
The operating time of a battery, which is the time the battery can hold
a charge, varies depending on how you use your laptop computer.
The operating time of your battery significantly reduces if you use:
• Optical drives.
• Wireless communication devices, ExpressCards, media cards,
or USB devices.
• High-brightness display settings, 3D screen savers, or other
power-intensive programs like complex 3D graphics applications
and games.