![]() With that, restart your PC and follow the same method to lead to the Device Manager and check whether the drivers are back again and whether you could find the missing brightness slider. Use of the third-party driver downloader software to find the latest version or even older version if that fixes the problem.Download OEM software from the website and it will automatically update your driver or notify you about it.Go to Windows Update > Advanced Options >Optional updates > Driver Download, and install if there is one available for you.Reinstalling the drivers or moving back to an older version could help in that scenario. Sometimes, brands may push out a buggy update out of nowhere for your monitor or graphic cards. With that, restart our PC once and check whether the missing brightness slider is back, else continue to follow other methods mentioned below. Under the Device Manager, navigate and expand Monitors and from the list of monitors available, choose your primary monitor, right-click and choose Enable Device. ![]()
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