If your screen is too bright or too dark, it could cause eye fatigue and eye strain. Try to match your screen’s brightness with the ambient light using one of the methods below. Note that if your screen brightness is changing on its own, it may be due to the Adaptive Brightness feature in Windows 10. Toggle that off before you change your brightness, otherwise it will be for naught. Method 1: Power Options Launch the Power Options by opening the Start Menu and searching for “Power Options”. Down at the bottom, use the Screen brightness slider to adjust accordingly….
Read the full article: 3 Easy Ways to Adjust Brightness in Windows 10