Dead Pixel Tester (DPT)  was written to help you to check yourown screens by cycling through the three primary colours used (red,green,blue) and all on (white) and all off (black).

Dead Pixel Tester, with display tests. TFT screens have thousands of pixels, on a 1024x768 monitor, there are three cells for each pixel - one each for red, green, and blue - which amounts to nearly 2.4 million cells (1024x768x 3 = 2,359,296). There's only a slim chance that all of these will be perfect; more likely, some will be stuck on (creating a "bright" defect) or dead (resulting in a "dark" defect).

In most cases, a stuck or dead pixel is impossible to fix (some people rub them gently with a cloth etc. search the net for other ways), however most manufacturers have a policy which will specify that after X amount of dead/stuck pixels they will replace the screen free of charge (in warranty period). You can use DPT to help identify IF you have any pixels and how many in order to see if you qualify for a replacement screen/laptop... no guarantees though!

Download: Dead Pixel Tester (DPT) 3.00 (272 KB) | Screenshot | Homepage