The display tests will help determine if there are any stuck/dead pixels on the device’s screen or monitor. The entire screen will display five colors, one by one, requiring a stuck/dead pixel count to be entered for each color. Those colors are red, green, blue, black, and white. Keep in mind that the pop-up window can be moved by clicking and dragging it, allowing the entire screen to be thoroughly checked. Holding the keys or on the keyboard can also be used to hide the pop-up window when a mouse isn’t present.