Check your LCD for dead pixels. No install or dependencies, can be run from a floppy.

Licence Type: Freeware

Operating Systems Support: Win All

Download Link: Dead Pixel Locator

Developers Homepage: Astris Interactive Inc.

This software is extremely easy to use. It displays homogeneous colors (black, white, the primary colors etc.) on the entire screen, so you can easily recognize any faulty pixels. Step through the colors with the arrow keys and check every part of the LCD screen carefully. The color of dead or faulty pixels will be different. It is a good practice to run this software before buying an LCD monitor, or during the pixel warranty period.

There is no setup, no dependencies, it can even be run directly from a floppy disk or pendrive. No spyware, no malware.