As you can see the brightness toggle is missing and the keyboard key for that doesn't work as well, I tried to reinstall the driver from device manager, didn't work. The laptop is hp 2000. It disappeared 2 days ago, I have no idea why.
The best I can find to offer you, is the brightness slider in Power Options. You can find in one of two ways:
- Right-clicking the Start Menu button, and it will be the third option.
- Type Power Options into the Cortana Menu.
At the bottom, you will see a slider for screen brightness.
I tried to find a way to repair the missing tile for brightness, but all the guides I come across state a method you've tried.
Hope this helps.