1. Click the Start button, point to Settings, and then click Control Panel.
2. Click the Power Options icon.
Power Schemes Tab
The Power schemes pull-down menu displays the selected preset power scheme:
Portable/Laptop (default)
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Home/Office
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Always On
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Presentation (Windows XP and Windows 2000 only)
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Minimal Power Management (Windows XP and Windows 2000 only)
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Max Battery (Windows XP and Windows 2000 only)
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HINT:
Dell recommends that you continue to use the Portable/Laptop power scheme to maximize battery power conservation.
Each preset power scheme has different time-out settings for putting the computer into standby mode, turning off the display, and turning off the hard drive.
Alarms Tab
HINT:
To enable audible alarms, click each Alarm Action button and select Sound alarm.
The Low battery alarm and Critical battery alarm settings alert you with a message when the battery charge falls below a certain percentage. When you
receive your computer, the Lower battery alarm and Critical battery alarm check boxes are selected. Dell recommends that you continue to use these