I'm and end user just like you.
I agree we need Microsoft to fix this issue but my workaround works in the meantime.
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hello , Yesterday I installed the 1809 update , and today i noticed that each time i restart my laptop the brightness level is being reset automatically to 0% or 25-50 i'm not really sure , and after windows will boot up , i will need to manually adjust the screen brightness again to 100% . I searched the web and i found this https://www.windowscentral.com/windows-10-october-2018-update-common-problems-and-fixes#fix\_brightness\_windows10\_1809 , and it might be an update issue i think , by the way , my power plan is set to maximum performance and my laptop is always plugged in , and solutions or ?
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I'm and end user just like you.
I agree we need Microsoft to fix this issue but my workaround works in the meantime.
Its not working .. Will never work .... Its a BUGGGGG
I created this task in PowerShell that adjusts the brightness at startup to Microsoft Windows 10 V1809.
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe "(Get-WmiObject -Namespace root/WMI -Class WmiMonitorBrightnessMethods).WmiSetBrightness(1,100)"
When you restart your computer the screen brightness will change to 100% (1,100)
i uninstalled latest intel update and stopped windows 10 update till microsoft fixes the problem
and it worked with me
https://downloadcenter.intel.com/product/80939/Graphics-Drivers
iam sorry it went back dim again it restarted fine but after couple restarts it went back dim again maybe because i didn't install updates from windows update