The screen dims a lot during a dark movie scene, what should I do?

Question

Windows

With very dark scenes of the film, the screen darkens very much, which is already barely possible to see something.
I turned off the adaptive adjustment through the registry and it did not help. In the settings of the LG monitor, I also turned off auto adjustment. Power consumption is maximum. OTs Windows 7. And even when you move the mouse, the screen brightens for a while. How to solve this ??? I will be very grateful to anyone who can help. Video card Nvidia GT 630

Answer 1

https://answers.microsoft.com/en-us/windows/forum/...

Such a problem may be due to a program from the laptop manufacturer, it can control the brightness of the screen, it may have settings that ignore the OS settings.

I turned off the adaptive adjustment through the registry and it did not help.

These settings are tied to the power plan. Maybe you turned it off for another plan. Yes, and there is no need to change it through the registry, there is a normal interface: Control Panel - Power. Turn it off there.