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A number of users report after recent windows 10 upgrade ( April 2018 update ) Windows won’t let to adjust brightness on the laptop. If you are also experiencing a Windows 10 brightness control “not working” issue. This problem in the relevant drivers doesn’t allow you to adjust your display brightness. Again sometimes incorrect power configuration, third-party application, Windows update bug cause “windows 10 brightness not working“. whatever the reason here some quick solutions you may apply to fix the problems that prevent changing the brightness of the screen in Windows 10.
After the recent upgrades to Windows 10 version 1803, my Dell Laptop brightness is off the charts. I can find no way to adjust it. The function buttons no longer work. Under settings, the display setting provides no adjustment for brightness.
If the problem started after install windows 10 version 2004, them make sure you have installed the latest Cumulative Update, As Microsoft mention: “Addresses an issue with the brightness controls on some laptops after updating to the Windows 10 May 2020 Update. ”
You Can check And install latest updates from Settings ( Windows + I ) -> Update & Security -> windows update -> And check for updates. Restart windows and check This will fix “can’t adjust brightness ” bug.
Change each of these to the settings you wish, then click the “Apply” button and finally the “OK” button. That’s all, restart your system and check on next login windows allows adjusting screen brightness.
Note: some users report Turnoff Adaptive brightness option from power options, allows them to customize the screen brightness. you can also try this “Turnoff Adaptive brightness ” and check it may help you.
As discussed this is a graphics driver related issue, and Reinstalling the display ( Graphics ) driver is the ultimate solution to fix screen brightness not working/increasing issue. First Go to the manufacturer’s website according to your PC GPU ie, Intel, Nvidia, or AMD. And download and save the graphics driver by selecting your GPU model and OS architecture 32/64 bit.
After that on next login install the latest graphics driver which previously downloaded from device manufacturer website. Again restart windows and check this time you can adjust screen brightness.
Also, Update Generic PnP Monitor Driver from Device Manager -> Expand Monitors and then right-click on Generic PnP Monitor and select Update Driver. Select Browse my computer for driver software. Click on Let me pick from a list of device drivers on my computer option at the bottom. Now select Generic PnP Monitor and click Next. After performing this action restart your system and check it helps to fix “can’t adjust brightness windows 10”
Did these steps help to fix windows 10 brightness not working or can’t adjust the screen brightness problem? Let us know which option worked for you.
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