Windows 10 Brightness. If the issue is with your Computer or a Laptop you should try using Restoro which can scan the repositories and replace corrupt and missing files. Look up for the Display Adapters in Device Manager.
The screen becomes dim when the AC adapter unplugged?
Now and then, you may want to adjust the brightness of your screen.
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Change screen brightness in Windows 10
Add a Slider to Change Your Display Brightness in Windows 10
Beneath Brightness and color, use the Change brightness slider. Press Windows key + I to open Settings and go to System > Display. You can also adjust the screen brightness in the battery life tab in the task bar.
