Dead Pixels: Types, Causes and What You Can Do

Learn the difference between dead, stuck and hot pixels, what causes them, how to test safely and when repair or warranty service makes sense.

The phrase “dead pixel” is often used for any tiny pixel defect, but several different faults can look similar. Identifying the behavior across multiple solid colors is more informative than judging one normal image.

Dead pixel

A dead pixel typically remains dark when neighboring pixels light normally. It may be easier to see on white or bright solid colors.

Stuck pixel

A stuck subpixel may remain red, green, blue or another fixed color. Because LCD pixels are built from colored subpixels, a single failed state can create a bright colored dot.

Hot or bright pixel

A bright point that remains visible on dark backgrounds can be described as a hot or bright pixel. Terminology varies between display technologies and manufacturers.

Can software fix a dead pixel?

Software cannot repair a physically failed transistor or damaged panel. Rapid color cycling can sometimes be used as a harmless observation/exerciser for a suspected stuck pixel, but it should not be represented as a guaranteed repair.

When warranty matters

Manufacturers may use pixel-defect thresholds that differ by panel class, region and product line. Photograph the symptom, record where it appears and check the exact warranty terms for your model.

Related tests and guides

Remember: browser diagnostics are observational tools. They can reveal repeatable visual symptoms, but they do not replace laboratory measurement or a technician when hardware diagnosis is required.