Screen brightness doesn't adjust Windows 11

[AlejandroRodriguez Castaño]

I was working in my computer when the screen went full black and turned back on. Immediately after that, brightness was set to maximum. I tried to use the keys and the settings bar to lower the brightness. Although the bar moves, it doesn't change the brightness. I already used the devices manager. I updated every driver. I downloaded AMD and Nvidia official driver installers. I even used a CMD command "/sfc scannow" and nothing works. I also checked the drivers through Lenovo webpage troubleshoot and diagnose tool.This is my computer: ideapad Gaming 3-15ACH6 Laptop - Type 82K2It doesn't show

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