Screen brightness setting maxed but not bright

Screen brightness setting maxed but not bright.

Hello everyone, this is my first post regarding technical support ever, thanks in advance for any help provided.

I have a Lenovo flex 15 laptop that is running windows 8.1.

As the title stats my screen max brightness had been lowered quite a bit and after messing around with power settings, going to the manufactures website to download another graphics driver, using Google and searching through forums I find myself here wondering what to do next.

My biggest success/temporary fix came from downloading and installing the lenovo recommended driver for windows 8.1(Intel Extreme Graphics Driver) which restored my screen it its full brightness for about 10 minutes before crushing my hoped by reverting back into darkness, of course I checked the settings again and removed/reinstalled the driver a few times and got similar results each time so I decided to seek out professional assistance if possible.

SOLVED - Go to power options, high performance, change plan settings, advanced, display, change enable adaptive brightness to off

It is most likely caused from low voltage at LCD inverter. This is responsible for producing backlight. You may have to replace the inverter.