Windows 10: The brightness of laptop screen reduces when connect or disconnect a second display

Hello … hope you are doing great my laptop keep reduces the brightness whenever I connect a second display or disconnect it is there any option in setting to let the brightness stays 100% brighter even if I connect or disconnect a second display thank you .

:)

 

Screen Brightness

My laptop screen brightness is always at Max even when I reduce it. And there is also no sleep option. I make use of windows 10. Please any suggestion

 

Lock Screen Dims (Brightness Auto Reduce at Lock Screen)

Hi,

Since you're having an issue with the brightness of your Lock Screen, we suggest uninstalling the display adapter from the Device Manager. Just follow the steps below:

• Press Windows key + X.
• Select Device Manager.
• Locate and expand Display adapter.
• Right-click on the display device and click uninstall.

Note: Please restart your computer after performing the steps above.

If the issue persists, download and install latest display driver from the computer manufacturer's website.

Please update us with the status. We will be glad to assist you.

 

Unable to Change Screen Brightness of Laptop


So I'm not sure how long this has been happening but for some reason, I can't change the brightness on my laptop screen. I have linked a picture and as you can see, my brightness says 0% and that I can't change it, however my actual brightness is at 100%. I have looked around everywhere and the only responses I have found don't work for me. Here's a list of everything I have tried:
- Reinstalling Display Drivers
- Rolling Back Display Drivers
- Reset Settings on UWT4
- Power and Battery Settings
(UWT4 or Ultimate Windows Tweaker 4 is a customizer for Windows 10 and I thought that might be the problem but it wasn't)

If anyone has any suggestions on how to fix this, it's greatly appreciated! Thanks! -