What the tool does, how to run it, and what to expect from the result.
A stuck pixel has a subpixel stuck on, so it glows red, green, blue or a mix. Rapidly switching it between colours sometimes frees it. Drag the flashing square over the pixel, start it, and look away for 10-20 minutes. It works in some cases and does no harm; it cannot repair a dead pixel, which is always black because the transistor has failed.
A quick way to understand who this helps, what it solves, and where it connects next.
Gamers, PC builders and anyone checking a device before a warranty claim.
Using the stuck pixel fixer without installing anything or signing up.
Short answers for the questions people usually have before trying a utility like this.
Sometimes. Results are mixed and depend on the fault. It is worth trying before a warranty claim, since it costs nothing.
Not for people with photosensitive epilepsy. The tool asks you to confirm before it shows the flashing area. Look away while it runs.
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Flashes colours over a stuck pixel to try to unstick it.
Run it for 10-20 minutes. It revives stuck pixels (lit in one colour) in some cases; it cannot fix dead pixels (always black), which are a hardware fault.