If the color on your Dell laptop screen is dull and you're having difficulty seeing objects that appear on-screen, you may need to adjust the screen's brightness to suit your needs. This can enhance your experience if you've gotten used to that dull screen, especially if you use your laptop for gaming and watching movies.
Right-click on the desktop and a drop-down menu will appear.
Click on "Display Properties."
Click on "Color Correction."
Note the "Brightness" scale. Slide the marker toward the right to brighten it and toward the left to decrease the brightness.
Click on "Apply."
Click on "OK." The "Display Properties" screen will close and the laptop screen's brightness will change.