![]() Step 1: Open Power OptionsĬlick on the Start button, then search for "Power Options" and launch the corresponding Control panel section. However, what if you're not concerned about battery life and want the brightness as high as possible? Furthermore, the ambient light sensor is not perfect, and at times your display brightness can be in flux as described above. Thus, adaptive brightness is useful in conserving battery life since the display is a pretty power-hungry component. ![]() The adaptive brightness feature taps into the ambient light sensors to automatically adjust your display to match surrounding lighting conditions. Most displays, especially on laptops, utilize ambient light sensors to detect surrounding levels of light. In modern versions of Windows, Microsoft introduced a feature called adaptive brightness. First of all, no, your laptop is not haunted, but more importantly, we're going to go into why this is happening and how to fix it. If this scenario sounds familiar, then I have some good news for you. Now you're confused and worried that your laptop is potentially haunted. Angered by this, you get up and move your laptop, only to suddenly notice that the display does in fact get a lot brighter. Press and hold (or right-click) the display adapter name, then select Update driver and follow the instructions.You're smashing your keyboard to increase your screen brightness, yet it won't go any higher, but you know you've been able to set it higher before. In Device Manager, select Display adapters, then select the display adapter. In the search box on the taskbar, type Device Manager, and then select Device Manager from the list of results. Use the Adjust brightness slider to enable or disable automatic-brightness adjustment. If you don't have a desktop PC and the slider doesn't appear or work, try updating the display driver. Adjusting brightness in Windows 7 To enable or disable automatic screen brightness adjustment: Click Start Control Panel Display. To find the brightness slider in earlier versions of Windows 10, select Settings > System > Display, and then move the Change brightness slider to adjust the brightness. The Brightness slider appears in action center in Windows 10, version 1903. ![]() To change the brightness on an external monitor, use the buttons on it. You might not see the Change brightness for the built-in display slider on desktop PCs that have an external monitor. Even if you use it, you can still move the Change brightness for the built-in display slider to fine-tune the brightness level. This automatic setting helps make sure your screen is readable wherever you go. Under Brightness and color, look for the Change brightness automatically when lighting changes check box, and then select it to use this feature. To find out if your PC supports this, select Settings > System > Display. Some PCs can let Windows automatically adjust screen brightness based on the current lighting conditions. (If the slider isn't there, see the Notes section below.) Select action center on the right side of the taskbar, and then move the Brightness slider to adjust the brightness. For more info, see Adaptive brightness and contrast in Windows. Some Windows PCs can automatically adjust the screen brightness and contrast based on content that’s displayed on your built-in screen. You might also see another check box displayed: Help improve battery by optimizing the content shown and brightness. Even if you use it, you can still move the Brightness slider to fine-tune the brightness level for a built-in display. ![]() Select Brightness, look for the Change brightness automatically when lighting changes check box, and then select it to use this feature. To find out if your PC supports this, select Settings > System > Display. (If the slider isn't there, see the Notes section below.) Select the Network icon on the right side of the taskbar, and then move the Brightness slider to adjust the brightness.
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