Hello there,
Could you please send us a picture of SN code at the bottom of machine ?
There are several ways to adjust your screen brightness in Windows 11 :
1. Adjust the brightness by using the power icon on the taskbar : Click the power icon in the lower right corner of the taskbar, and then locate the brightness bar to adjust.
2. Adjust the brightness of the built-in monitor by using the Settings app : press Win + i to open Windows Settings, select “System” and then tap the “Display” option. Here you can adjust the brightness of the built-in monitor.
3. Use the Quick Action Panel to adjust the brightness : Open the Quick Action Panel from the battery, sound, or Internet icon on the right of the taskbar and use the brightness slider to adjust. It is important to note that the brightness slider is available in mobile devices, and if it is a connected external display, the control slider may automatically hide.
Have a nice day!
