1. Log on to your computer as an ADMINISTRATOR. Click Start, and then click Control Panel.
5. If available, adjust the System standby and System hibernates settings if you are not happy with the default selection. Standby reduces power usage when your computer is not in use by turning off the parts of your computer that use the most energy. It only takes a few seconds to start a computer from standby. Hibernation saves your programs and shuts your computer down completely. Hibernation uses no power, but it takes a few seconds longer to recover from hibernation when you need to use your computer again. Setting shorter delays before standby and hibernation reduces power usage.
6. On the Advanced tab, you can adjust the default behavior of the power buttons on your computer. If you have a notebook computer, you will also see settings for closing the lid of your computer and pressing the sleep button on your computer. On notebook computers, you can significantly extend the battery life by setting the When I close the lid on my portable computer option to Stand by.
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