If you've spotted a tiny colored or dark dot on your monitor that doesn't belong, you're dealing with either a dead pixel or a stuck pixel. They're easy to confuse, but the distinction matters because one is sometimes fixable and the other almost never is.
What Is a Dead Pixel?
A dead pixel is a pixel that isn't receiving any power at all. It appears as a small black dot regardless of what color is displayed around it, because none of its sub-pixels (red, green, blue) are lighting up. Dead pixels are typically caused by a manufacturing defect or a failed transistor and, unfortunately, are essentially permanent - there's no reliable software fix for a pixel that has no power reaching it.
What Is a Stuck Pixel?
A stuck pixel, by contrast, is receiving power but is locked showing a single color - often red, green, or blue - no matter what the rest of the screen displays. This happens when one or more of the pixel's sub-pixels gets stuck in the "on" position. Unlike dead pixels, stuck pixels sometimes respond to specific techniques designed to "unstick" them.
How to Tell Them Apart
The easiest way to distinguish the two is to run through several solid colors - black, white, red, green, and blue - and watch how the dot behaves. Use the Dead Pixel Test for this; it cycles through each color in fullscreen automatically.
- Stays black on every color, including white - this is a dead pixel.
- Shows a consistent color (like bright green) regardless of the background - this is a stuck pixel.
- Changes color between different test screens - this could be a partially stuck pixel, where only some sub-pixels are affected.
Can You Fix a Stuck Pixel?
Sometimes. A few approaches people try, with mixed success:
- Gentle pressure massage - very lightly pressing on the pixel (with the screen off) can occasionally free a stuck sub-pixel, though this carries some risk if done too firmly.
- Rapid color-cycling software - flashing colors quickly at the stuck pixel's location for several minutes sometimes resolves it by forcing the sub-pixel to reset.
- Just waiting - some stuck pixels resolve on their own over time as the panel settles.
None of these methods are guaranteed, and none of them work on true dead pixels, since there's no power reaching the pixel to "reset" in the first place.
When to Consider a Replacement or Warranty Claim
A single dead or stuck pixel is common enough that many manufacturers won't replace a monitor for just one. But if you're noticing several, especially clustered together, it's worth checking your specific manufacturer's dead pixel policy - many allow returns or replacements within a certain threshold, particularly if caught within the return window.
Preventing Future Pixel Issues
You can't fully prevent manufacturing-related dead pixels, but avoiding physical pressure on the screen, keeping it clean without excessive force, and avoiding leaving static images on-screen for extended periods (especially on OLED panels) can reduce the risk of pixel-related issues developing over time.
Conclusion
Dead and stuck pixels look similar but come from different root causes - one is essentially permanent, the other is sometimes fixable. Run the Dead Pixel Test across all five colors to correctly diagnose which one you're dealing with before deciding on next steps.