So I was changing the settings for my battery and all of a sudden, I wasn't able to change my brightness. Not with the fn shortcut and I can't even go to the settings and lower the brightness manually. It doesn't work! I really don't want to keep staring at my screen because it is making my eyes burn!!! I already tried updating the Display Adapters in the Device manager and I restarted my computer a million times, but it still doesn't work. What do I do now?!?