1. Please check whether the LED indicator is set to 10 sec. or ON.
2. Please check whether all accessible functions are activated,
including Night Hours Protection, Low Blue Light Plus, and B.I. Gen2.
For more details, please refer to the "Working with Night Hours Protection," "Working with Low Blue Light Plus," and "Adjusting screen brightness automatically."
(Brightness Intelligence Gen2) in the user manual.
If the problem persists, please contact BenQ Support.