Most notebooks come with a vendor-supplied power management utility, in addition to Windows 7's power menu in the Control Panel. Use either one to create a custom power profile that meets your needs and work habits. It can save you valuable battery life.
Each vendor's power utility has its own set of menus, but to use the Microsoft power utility, launch Power Options from within the control panel, select one of the existing plans, click Change plan settings, and then Change advanced power settings.
In advanced power options, you will want to make a few key decisions, based on how you plan to use your notebook. Here are some of the most important choices you can make.