VIDEO Can't change brightness (windows 8.1)

[silke]

Out of nowhere (so without any sudden update or anything) my brightness fader stopped working. I can still slide it but it does not actually change the brightness. I need my laptop for work and without any other laptop to work on, this really gives me a headache to work with.

I tried updating my screen adaptors, but it does not change a thing. Somebody on youtube said I had "to activate Windows and update device drive software. Install device driver software for the device 'Intel Management Engine Interface'." But I have no idea how to do that. I have exactly the same problem as him though so if this worked for him I would like to try this solution.
(the video is , I'm not sure if I'm allowed to post youtube vids here)

Any help would be greatly appreciated! Thank you

 

[Neemobeer]

I'd wager you have adaptive brightness enabled.

• Open 'Control Panel'
• Click on 'Power Options'
• Click on 'Change plan settings' next to your currently selected power plan
• Click on 'Change advanced power settings'
• Expand Display
• Expand 'Enable adaptive brightness'
• Turn them both off

 

[silke]

I'd wager you have adaptive brightness enabled.

• Open 'Control Panel'
• Click on 'Power Options'
• Click on 'Change plan settings' next to your currently selected power plan
• Click on 'Change advanced power settings'
• Expand Display
• Expand 'Enable adaptive brightness'
• Turn them both off

Seems like both are already turned off :s

 

[nmsuk]

Have you tried enabling, logging out and back in. Then disable and see if brightness works as it should.

 

[silke]

Logging in and out didn't work, but restarting did! I don't know if it was the enabling and disabling of the adaptive brightness or that I had to update the screen adaptor intel, but it suddenly worked

Thank you both so much!