Windows 10 – cannot adjust brightness / screen dim

Quick tip – I had this annoying behaviour on my main laptop where suddenly the screen was too dim and I couldn’t adjust the brightness.

There are many solutions on the internet including :

• Updating drivers
• Adjusting display settings in your power profile.

None of that worked for me. What I DID find was that on the Display screen , just under the brightness setting , you may see an option for “HDR”. For some reason this was set to “On” on my machine – simply turning it off restored the brightness to the display.