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Troubleshooting black screen issues on HP Notebooks: Click here to view the instructions!

‎01-21-2021 10:10 PM - edited ‎01-21-2021 10:31 PM

HP Recommended
Product: Spectre x360 14
Operating System: Microsoft Windows 10 (64-bit)

My Spectre drops display brightness to 60%(it shows 100% brightness in windows but the display does not change its brightness from the setting from 60% to 100%) when it is unplugged and can no longer go above that brightness unless 2 things happen: 1) Restart the computer with the AC power plugged in 2)Reinstalling the graphics drivers with the AC power plugged in.

 

Windows 20H2

i7-1165G7

16GB RAM

512GB SSD

 

Methods that I have tried that did not change anything:

1)Update and reset the BIOS Defaults

2)Uninstall Monitor and Display Adaptor in device manager

3)Turn off all the battery power optimizations for the display in Intel graphics command center

 

Some theories I have for this:

1)I've seen many articles talking about low brightness on battery and were solved by changing the power plan in power options where in the solutions, you can change the maximum brightness on battery and plugged in however those settings are not available to me in the advanced power plan settings menu. My guess is that those settings were changed so that the max brightness on battery is 60%. Is there any way to change this in the registry?

2)Some HP power-saving feature so that battery life is better

 

However is these are the reason, why wouldn't the maximum brightness come back up if I replug the AC power?

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