PixelHealer (for Windows) can help you try to fix dead pixels by yourself, before running back to the store!

Easily check for dead, stuck, or defective pixels. Test monitors before purchasing. Test screens during the warranty period. Test anytime and anywhere. DefectPX comes with multi-monitor support, and a very intuitive interface.

[Feature complete] Screen loop to try to unstick stuck dots

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Utilities to find and restore dead or stuck pixels and testing touchscreen and multitouch dead zones

This app tries to revive a stuck pixel by positioning a blinking dot on it.