Whether your are environmentally conscious or simply looking to cut down on your monthly electrical bill, programming your computer's "sleep" or "standby" mode reduces the amount of energy your computer consumes. According to the Office Equipment Efficiency Program website, computer monitors in sleep mode use only a few watts of power, whereas a computer running a screen saver uses as much energy as if it were in full use. Adjust your computer sleep mode so that your monitor turns off when you are not using it.
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Click the "Start" button and select "Control Panel." A new window will open.
Open the "Power Options" window. How you do this may vary depending on which version of Windows your computer is running. In XP, click "Performance and Maintenance" and choose "Power Options." In Vista, click "System and Maintenance" and choose "Power Options." In Windows 7, click "System and Security" and choose "Power Options."
Select "Change Plan Settings." A new window will open.
Adjust the standby mode by using the drop-down menu. You can choose how early or late your computer changes into sleep mode. Click "Save Changes" and "OK" when you are finished.