HP elitebook wont let me change screen brightness

[jlzs]

I've tried to adjust my screen brightness in all the ways I can find, keyboard, notifications centre and the battery icon but it won't let me adjust it anywhere. Its not even showing as an option on some spots. the nightlight function as well is inaccessible to me. How can I fix this?

 

[webworkings]

Try this...

1. Go into "Control Panel" and then "Power Options".

2. Click the "Change plan settings" link next to which ever plan you are currently using and then click "Change advance power settings".

3. In this new window click "Display" to open up the listings under it.

4. Now locate and click each of the following..."Display brightness", "Dimmed display brightness" and "Enable adaptive brightness".

5. Change each of these to the settings you wish, then click the "Apply" button and finally the "OK" button.

6. You should be good.