On your desktop computer or laptop, you can use software and hardware controls to adjust the brightness level of the display. To turn down or up the screen brightness from the Quick Settings ...

Best performance uses up ... screen brightness, and set limits to save power. Change your settings to conserve energy by stopping push notifications and reducing background apps. A dead laptop ...

Laptop batteries are essential for portability, but their runtime can be significantly reduced by certain activities. Among the most demanding are high screen brightness, gaming, and video playback.