''Laptop display. Laptop displays don't have brightness or contrast buttons on the front. For a majority of laptops, there isn't a control for setting the contrast. However, you can set the brightness of many laptops by pressing and holding the Fn key, and then pressing a function key to decrease brightness () or increase brightness (). When using Display Color Calibration on a laptop, set the display to the maximum brightness setting.''
I tried this but it didn't work and there is no Intel Graphics icon on my taskbar.