What is windows backlight brightness driver

I upgraded my computer 8.1 windows laptop, but I can't find the driver for the controller of brightness.

backlight of the display shuts off when I put less than 65% brightness.

I still see the black screen with very dark applications. But the backlight is disabled.

My question is how to fix this? What is the driver for this?

BTW. I use the computer laptop asus k52jr

I find the problem. First disable the driver of your video card. Then restart the uninstall in Device Manager. Then windows automatically install back this driver if you have the internet connection.

Tags: Windows

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