If you notice a little permanent bright or dark spot on your screen—before you run your laptop into repair and yourself into some debt—you should try to see whether you can fix it yourself! If done carefully, it won't hamper your warranty and might save you a lot of time and worries.
Is it just a stuck pixel or is it in fact dead? A stuck pixel will appear in any of the colors that its three subpixels (red, green and blue) can form (good ol' RGB and cyan, magenta and yellow), depending on their functionality and brightness. In a dead pixel all subpixels are permanently off, which will make the pixel appear black. This may result from a broken transistor, in rare cases however even a black pixel may just be stuck. So if you’re seeing a colored or white pixel, your chances are pretty good and if it’s black, there is still hope.
These programs or Web apps all involve flashing colors or bright images on your screen to locate and hopefully fix the stuck pixel. Don't ask me how this magic voodoo works, just install it.
Should none of these tools resolve your pixel issue, there is one last chance. You can combine any of the tools and the magic power of your own hands to find and fix the pixel. There is a very good description of all available techniques on wikiHow. Another great step by step guide can be found on instructables.
But the steps are all pretty simple:
- Turn off your monitor.
- Get yourself a damp cloth, so that you won’t scratch the screen.
- Apply pressure to the area where the stuck pixel is. Try not to put pressure anywhere else, as this may trigger the creation of more stuck pixels.
- While applying pressure, turn on your computer and screen.
- Remove pressure and the stuck pixel should be gone.