It sounds like you have the screen brightness set differently when on battery. You can check this in the system Control Panel under power settings. You can get there by clicking on the magnifying glass icon at the bottom left of your Windows 10 screen. Type "Control Panel" in the search window, then select Control Panel from the list. In the Control Panel window that opens, type "Power" in the search window at the top right of the Control Panel Window. Select "Edit Power Plan" from the list. In the window that opens you will see your power settings for both plugged in and on battery. The sliders adjust the screen brightness. Be sure the screen brightness slider for on battery is set where you want it. When you have made your adjustments, click "Save" at the bottom right of the window.
6 years, 9 months ago
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