An idea comes from: https://github.com/tpurtell/PWM
This one though is a command-line utility, which allows you changing frequency on Windows startup
This utility allows you to adjust the LCD panel backlight PWM driver frequency, controlled by Intel Graphics embedded GPU
Changing the value from the default one may affect the lifetime of the lamp in your screen. You might end up looking into the abyss. You have been WARNED!
Latest resource version can be found here: https://github.com/anatoliis/PWMHelper/releases/download/v0.1/PWMHelper.exe thanks for anatoliis
As simple as running: set the PWM frequency to 2000Hz
Windows x64 / Intel embedded GPU's only
Public domain