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Weird issue with screen brightness, no longer changeable
Hello,
Having a weird issue with screen brightness... please help!
It started about 3 weeks ago. I booted into windows and the screen was very dark. I opened the action center and it said brightness was set at 75% - as usual. Clicking on it changed the number, (i.e. it cycles through the brightness settings of 0%/25%/50%/75%100%) however the actual screen brightness did not change.
I've checked everything I could think of, especially in the power management options. Adaptive brightness is off.
So I uninstalled the display adapter driver and restarted - windows automatically reinstalled the driver and everything was fine. A few days later, (including several full shutdowns) it happened again.
In the last 3 weeks it's happened about 6 times. Each time, I reinstall the display driver and it works fine a few more days.
Interestingly, of the 6 times it happened, 1 was a bit different. Instead of the screen being very dark, it was very bright, as if i'd set the brightness to 100%. Otherwise it was the same - i.e. I couldn't change the screen brightness (although again, I could cycle through 0%/25%/50%/75%100% in the action centre).
I was hoping that a windows update would fix this issue, but I received an update a few days ago and the problems persists.
Any help/ideas would be very much appreciated.