Windows 7. Brightness wont adjust

[pavlohorban1]

I have a dell windows 7 and when i press the brightness up or brightness down buttons, it says that the brightness is going up but the brightness isnt actually going up. Its just staying at maximum eye burning brightness. How do I fix this? Also if it helps i just installed nvifia experience and installed the newest driver from there.

 

[pavlohorban1]

I just restored my computer to before i installed the nvifia experience and its fixed.