Brightness and Night Light | System Settings

Open this page (keyboard, step by step):
1. Press Win + R to open the Run dialog.
2. Type ms-settings:display in the box.
3. Press Enter. Windows opens Settings > System > Display directly.
Alternative path: Press Win + I to open Settings, then choose System and Display. Or press Win + I, type display (or night light) in the search box at the top, then press Enter on the matching result.
Brightness Adjustment: Controls the intensity of the screen backlight. Laptops often use function keys or a slider in Settings for adjustment.
Night Light: When enabled, it reduces the blue light spectrum emitted by the screen, giving the image a warmer, more yellowish tint. Highly recommended for use in the evening to reduce eye strain and promote better sleep.

In Settings > System > Display, use Brightness and color for the brightness slider and the Night light switch.