I updated my driver and then restarted the laptop as I was told. But after that the screen was dark and is still so dark now. I've been sitting there for two hours or so and don't know what to do anymore…
Take a look at your screen settings! A driver update has already changed this for me! If nothing works and this problem is penetratingly unbearable, I would reset the computer!
The thing is, I can't even change the brightness using the respective buttons and the part has also disappeared in the settings.
Reset!
Got it now. The update installed a new screen driver that somehow couldn't change the brightness. I have the old one again.