It has a built-in stuck pixel locator that cycles colors on your screen. Its main tool will give you a little flashing dot that you can drag and drop anywhere on your screen – drag it over the dead pixel and let it run for at least several hours. Press on the pixel. Some people report that pressing and rubbing on the pixel can help reset it.

A dead pixel is a defect or malfunction that occurs in the LCD screen of a computer monitor, appearing as a small dot or square that is always dark or always light rather than displaying a color to form part of the picture on the monitor. A dead pixel also might be always one color rather than being either dark or light. Each type of dead pixel is caused by a slightly different malfunction in the monitor. Dead pixels also can occur in the image sensors used in digital cameras. In these cases, the pixel does not sense the correct light levels, creating defects in the resulting photographs.

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When a bad pixel appears as a dark spot on the screen, the cause can be traced to a transistor flaw. The transistor that controls the pixel is stuck in an 'on' position, so that current constantly flows, making it impossible for light to reach the layer below, where the red, green or blue color would be generated for the pixel to work correctly. In a light or white-colored dead pixel, the opposite occurs. One or more of the transistors is not functioning, so that the light that reaches the RGB layer is not differentiated into the correct color.