Quick Settings is located in the lower-right corner of your Desktop or by pressing the Windows Key + A. Quick Settings gives you quick access to your internet settings, including Airplane mode, Bluetooth, Volume, Night Light, Focus Assist, Accessibility, or anything you want to add. If you have problems with Quick Settings, you can reset it to default fixing most problems with this batch file.
Right-click on Quick Settings - Default.bat, and click on Run as administrator.
The batch file will delete a registry key which will then be recreated, restoring Quick Settings defaults. It will then restart Explorer for you, so you don't have to reboot.