A surefire way to increase the battery life on your new Windows 8 notebook is to change your laptop’s power settings. To modify your settings such as display brightness, sleep mode and graphics power-consumption, search for and run Power Options in the Start screen. Once there, click Change Plan Settings next to the power plan of your choice. (Alternatively, you can create a custom plan by clicking Create a Power Plan.) In the Edit Plan Settings dialog, you can adjust the display brightness or change the length of time it takes for the screen to dim, turn off or go to sleep. You can tweak more detailed settings, such as graphics usage, by clicking Change Advanced Power Settings.