In the search box on the taskbar, type Device Manager, and then select. If you dont have a desktop PC and the slider doesnt appear or work, try updating the display driver. If this doesn't resolve the issue, contact the hardware device manufacturer for support. 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. Click Install in the Microsoft Store application to begin installation.A pop-up message may appear that asks, "Open Microsoft Store?" Click Open Microsoft Store to launch the Microsoft Store application.If you are unable to access the Microsoft Store because you are using a business PC, contact your IT or network administrator. If your brightness is not working on both those options, go to the support page for your laptop on the Acer website to download and manually re-install the graphics card drivers. Unistall the Intel® Graphics Command Center How do I adjust the brightness on my computer You can adjust the brightness of your display to make your screen easier to read or to conserve battery power.To update the Intel® Graphics Command Center Use Intel® Driver & Support Assistant to automatically detect and install the driver RedShiftGUI is a free program that lets you easily control brightness and color temperature.Set Graphics Power Plan to Maximum Performance.Disable the Display Power Saving Technology (Intel® DPST).
To Disable Display Power Saving Technology in the Intel® Graphics Control Panel:
Now, click on Change Plan Settings options. At first, go to the Start Menu from your desktop, then click on the Control Panel option. Adaptive Brightness is a setting provided by Windows that uses an ambient light sensor in the system to automatically adjust a display's brightness to the surroundings. Step-3: Adaptive Brightness Option should be enabled. This works alongside Acer’s hybrid QoS software, which users control via the Acer Predator Connect Utility to set up and control priorities of upload/download bandwidth. If this setting does not appear, we recommend contacting Microsoft Support or your system manufacturer for information on how to disable the Adaptive Brightness. How do I adjust brightness/contrast on my Acer Aspire All-In-One AZ3620 I am running under Windows 7 64 bit. Disabling Change brightness automatically when lighting changes in Windows Display settings may also resolve issues with automatic brightness.