Defpix - Defective (dead) pixels tester
Defective pixels are pixels on an LCD screen not performing as expected. The pixel is failing to reproduce light levels correctly. There are three different types of defective pixels:

*Hot pixels (always on).
*Dead pixels (always off).
*Stuck pixels (one or more sub-pixels are always on or always off).

Defpix - Defective (dead) pixels tester is a free software that can help you with checking for defective pixels on your LCD screen. The software simply shows these colors - red, green, blue, white and black - over the whole surface of the screen. Defpix requires no installation and supports multiple monitor systems.

The license of this software is Freeware, you can free download and free use this diagnostic software.