- 1). Click "Start," then select "Control Panel."
- 2). Click "System and Security," then select "Power Options." The Power Options window opens.
- 3). Click "Change Plan Settings" to the right of your current plan. Your current plan is in bold.
- 4). Click the slider next to "Adjust Plan Brightness" under "On Battery" or "Plugged In" depending on whether your laptop is running on battery power or plugged into a power outlet.
- 5). Drag the slider to the right to increase the brightness or to the left to decrease the brightness on your laptop screen.
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