Use the monitor’s physical buttons or joystick to open the on-screen display menu
Find the Brightness or Picture settings
Increase or decrease the brightness level
Save or exit the menu
On Windows, open Settings
Go to System
Select Display
Adjust the brightness slider if available
On macOS, open System Settings
Go to Displays
Adjust the brightness slider
Use the keyboard brightness keys if your monitor or laptop supports them
Check the monitor’s software or driver utility for brightness controls
Turn off auto-brightness or adaptive brightness if it is enabled
Adjust the room lighting if the screen still feels too dim or too bright