How to Check for Dead Pixels

Wipe away dust and smudges with a soft, dry microfibre cloth — most reported “dead pixels” turn out to be dust. Set brightness to the level you normally use; extreme brightness or dark-room viewing hides real faults.

Close anything that overlays the screen. Browser address bars, notches and camera cutouts can cover parts of the physical display, and no web page can inspect pixels hidden behind them.

Press Start Test on the main page. The screen fills with nine solid colours in turn: black, white, red, green, blue, cyan, magenta, yellow and medium grey. Move through them with Next, the arrow keys, Space, or a sideways swipe on touch screens.

On each colour, look for any dot that does not match the field — dark on bright fields, glowing on dark ones. Press H to hide the controls and check the edges and corners, then Exit to finish.

Use the guided mode or the screen map to mark approximately where a suspicious spot appeared, then download the text or PNG summary. It is a “User-reported visual inspection” note with the date and colours inspected — your record, not a diagnosis.

Confirm a suspect on both black and white, rule out dust by tilting the screen, and check the manufacturer’s pixel policy before filing any claim. Whether one faulty pixel qualifies for repair depends on that policy.