Why is my Windows brightness slider is adjusted, but has no proper effect on actual brightness? No matter how you adjust the slide, brightness is always at max, only decreases (dims) between 40 and 55.
I have tested every possible Intel HD graphics driver version out there and checked it in three different OS; Windows 7, 10 and Ubuntu. Shows the same symptoms in each.
Tried calibrating the screen, but no dice.
Might it be the bios, graphics driver or the hardware issue?
Computer : Toshiba Satellite L755-S5242 (Windows 7 Ultimate SP1)