![]() You can also access additional display settings directly from the Action Center. Move the slider to the left to decrease the brightness or to the right to increase it.In the Action Center, locate the Brightness slider.You can either click on the speech bubble icon or press the Windows key + A to open it. ![]() Click on the Action Center icon on the right side of the taskbar.Here’s how you can turn down the brightness using the Action Center: The Action Center in Windows 10 offers a quick and accessible way to adjust various system settings, including screen brightness. Additionally, this method is suitable for all types of Windows 10 devices, whether it’s a laptop, desktop, or tablet. Using the Settings menu to adjust screen brightness is a reliable method as it provides precise control over the brightness levels. The new brightness settings will take effect immediately, providing a comfortable viewing experience for longer durations. Once you have set the desired brightness level, you can close the Settings menu. You can also enable the Change brightness automatically when lighting changes option to allow Windows 10 to automatically adjust your screen brightness according to ambient lighting conditions. Adjust the brightness level by moving the slider to the left to decrease the brightness, or to the right to increase it.Scroll down to the Brightness and color section in the Display settings.Within the System settings, click on Display in the left sidebar.In the Settings window, click on System to access system-related settings.Click on the Start menu and select the Settings gear icon.Here’s how you can turn down the brightness using the Settings menu: It is also useful when you have reinstalled Windows on your laptop or tablet.The Settings menu in Windows 10 provides a convenient and straightforward way to adjust various system preferences, including screen brightness. Using the Registry tweak method described above, you can quickly modify the screen brightness settings in your production environment. Repeat these steps for all power schemes you want to modify and you are done.In my case, they are set to 90% and 50% respectively. On the right, modify or create the following 32-bit DWORD valuesĪCSettingIndex - specifies the screen brightness level in decimal from 0 to 100 when plugged in.ĭCSettingIndex for - specifies the screen brightness level in decimal from 0 to 100 when on battery.Tip: If you are getting the following error message "You do not have the requisite permissions to create a new key", run regedit.exe using ExecTI. If you don't have such a key, you need to create it. Substitute the 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c with the appropriate value you got in the step 3. See how to go to a Registry key with one click. Go to the key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\User\PowerSchemes\8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c.For example, the GUID of the High Performance power scheme is 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c. Note the GUID of the power plan for which you want to change the screen brightness.In the output, you'll see GUIDs for each available power plan.Open an elevated command prompt and type or copy-paste the following command: powercfg /L.To change the screen brightness with a registry tweak, do the following. The brightness level can be modified per each power plan. It is possible to change the screen brightness with a Registry tweak. For example, the software brightness settings which directly alter the display's backlight may not work if you have an old CRT monitor. Also, you may need to update your display drivers. ![]() For the method described below to work, you need to have a display with the appropriate hardware support. Note: While most portable devices like laptops or tablets support changing the brightness of the screen out of the box, most Desktop PCs come without this ability because the display hardware has its own brightness control. ![]() ![]() How To Change Screen Brightness in Windows 10 I've covered them in the previous article: There are a number of ways to change the screen brightness in Windows 10 without using a Registry tweak. ![]()
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