Click on the black box above to get a completely dark black screen. Press the ESC key to return.
Click on the colors above to view the full screen color version
Why Black Screen?
If your monitor display is on, chances are you are not able to see the dust particles on your screen. To clear your screen, just click on the black button, which will make your screen pure black, so you can easily see the dust particles and clean them.
Another reason to go completely black is to conserve battery power when you’re not using your computer. Making the monitor completely black means the monitor LEDs are off and the monitor consumes minimal energy. Just click on the black button when you want to go away. Press the ESC button when you’re back.