How to Fix a Stuck Pixel
The honest version: makers disagree about whether a stuck pixel can be fixed at home, and the most detailed advice says not to try. Here is what they say, and what is left to do.
First make sure it is a stuck pixel: a dot that stays lit on a black screen, not a dark dot or a speck of dust. Makers disagree about home fixes. Dell strongly advises against pixel-fixing software and against pressing on the screen, and says a stuck pixel stays stuck until the monitor is replaced; Lenovo's glossary says software can sometimes correct one. Never press on the panel. If the pixel stays, the warranty is the reliable route.
A stuck pixel is maddening because it is so small and so permanent-looking. As Dell puts it, “you may find information online about pixel-fixing software or methods that involve applying pressure to the screen.” The makers themselves are far more cautious, and they do not agree with each other. This guide sets out what they say.
First, make sure it is a stuck pixel
Three different things look like a bad pixel, and only one of them is a stuck pixel.
| What you see | What it is |
|---|---|
| A dot that stays lit, white or one color, most visible on black | A stuck pixel. Dell: "All three subpixels in one pixel are permanently turned on"; a colored dot is a single subpixel stuck on |
| A black dot, visible on white but not on black | A dead pixel. Dell: "All three subpixels in one pixel are permanently turned off" |
| A speck that is not a crisp square, or moves when you wipe | Dust or dirt. Dell's tip: "Clean your screen first" |
The Dead Pixel Test shows the full-screen colors you need: black to find a stuck pixel, white to find a dead one, and red, green and blue to see which subpixel is involved. Apple notes that “a small piece of dust or other foreign material may appear to be a pixel anomaly”, and that dust on the front of the glass “can be easily removed using a lint free cloth.” Dead Pixel vs Stuck Pixel covers telling them apart in more detail.
What makers say about fixing it
This is where the advice splits.
| Maker | What its own page says |
|---|---|
| Dell | "Do not attempt to fix stuck pixels yourself." It strongly recommends against pixel-fixing software and applying pressure, because they "can cause further damage to your display", "may void your warranty" and "may not work". And: "A stuck pixel stays stuck until the monitor is replaced." |
| Lenovo (glossary) | Stuck pixels "have the potential for correction through software methods or physical manipulation." It goes further than any other maker, saying even dead pixels "can sometimes be fixed, but it's not guaranteed." The page says it is "for reference purposes only and may contain errors". |
| Acer | "Pixel defects or failures cannot be fixed or repaired and can happen at any stage in the LCD's life." |
Dell’s page is a detailed support article, updated in 2026; Lenovo’s is a glossary entry that disclaims its own accuracy. That difference is worth weighing. What no maker offers is a success rate, and no one can tell you in advance whether anything will work on your pixel.
Do not press on the screen
The most widely repeated home remedy is to press or rub the spot through a cloth. Dell’s advice is unambiguous: “Applying pressure can crack the screen or damage internal components”, and its tips for preventing stuck pixels include “Avoid pressing hard on the screen.” Samsung lists “physical impact or pressure on the screen” among the causes of dead pixels on its phones.
Pressing on the panel is the one home remedy that risks turning a single stuck pixel into a damaged screen.
What a pixel-cycling tool can and cannot do
Pixel-cycling tools show a small area of rapidly changing colors, on the idea that switching a stuck subpixel on and off repeatedly might free it. Here is what can be said honestly:
- It cannot fix a dead pixel. Dell: “No software or other methods can bring it back to life.”
- It may do nothing for a stuck one. Dell says a stuck pixel stays stuck; Lenovo’s glossary says software may help. Neither publishes evidence either way.
- It may affect your warranty. Dell warns that fixing stuck pixels yourself “can damage your display and may void your warranty.” Check your own maker’s terms first.
- It flashes. Any tool of this kind flashes colors, and flashing can trigger seizures in people with photosensitive epilepsy.
If you decide to try ScreenTail’s fixer
The Stuck Pixel Fixer flashes. Flashing lights can trigger seizures in people with photosensitive epilepsy: if you, or anyone who can see your screen, has epilepsy or has ever had a seizure, do not use it. There is no guarantee: it may help some stuck pixels, it cannot fix dead ones, and you use it at your own risk.
If you go ahead, it works like this:
- 1
Read the warning and tick the box. Nothing opens until you do, and a second box appears if your device asks for reduced motion.
- 2
Place the square over the stuck pixel while it shows a steady gray. It is at most 100 × 100 pixels, never full screen.
- 3
Press Start and look away. The square changes color no more than eight times a second. Any key, click or tap stops it, and it stops by itself after 10 minutes.
- 4
Check the pixel on a plain black screen. If it is still there, stop trying and turn to the warranty.
Photosensitivity & Safety explains the limits the fixer keeps and why.
When to use the warranty
For a pixel that stays, the maker is the reliable route, and time matters. Dell notes that “pixel defects are only covered during your warranty period.” Several makers cover them only above their own allowed count: Acer, for example, replaces a display during the warranty “if the number of dead pixels is greater than the allowable number.” Apple’s advice, if you are concerned about pixel anomalies, is to take the product in “for closer examination at an Apple Store, Apple Authorized Service Provider, or an Independent Repair Provider.”
Dead Pixel Warranty Policies quotes what Dell, ASUS, LG and Apple publish, with the dates they were read. If your display is new, check the seller’s return window as well.
Questions
Can pressing on the screen fix a stuck pixel?
Do not try it. Dell warns that "applying pressure can crack the screen or damage internal components", and Samsung lists "physical impact or pressure on the screen" among the causes of dead pixels on its phones. Lenovo's glossary is the one maker page that suggests gently pressing with a soft cloth, and it describes itself as for reference only.
Will a stuck pixel go away on its own?
Dell says no: "A stuck pixel stays stuck until the monitor is replaced. It won't get better or worse on its own." No maker page quoted here says one clears by itself.
Can a dead pixel be fixed?
No. Dell says "no software or other methods can bring it back to life. The only solution is replacing the display panel", and Acer that "pixel defects or failures cannot be fixed or repaired." The Stuck Pixel Fixer does nothing for a dead pixel.
Will trying a fixer affect my warranty?
It might. Dell warns that attempting to fix stuck pixels yourself "can damage your display and may void your warranty." Read your own maker's terms before you try anything.
Is the Stuck Pixel Fixer safe to use?
It flashes, so it is not for anyone with photosensitive epilepsy or who has ever had a seizure. It keeps the flashing to a square of at most 100 × 100 pixels, changes color no more than eight times a second, opens only after a warning, and stops on any key, click or tap. The Photosensitivity & Safety page explains the limits.
How this guide was made
Every statement about stuck and dead pixels, home fixes, pressure and warranties is quoted from the makers' own support pages (Dell, Lenovo, Acer, Apple and Samsung), with the dates they were read; where makers disagree, both sides are given. The description of the Stuck Pixel Fixer is of ScreenTail's own tool and the limits it enforces.
No success rate for any fixing method, because no maker publishes one. No instructions for pressing, rubbing or tapping the panel, which Dell warns can damage it. No acceptable-defect counts: those are per maker and per product line, and are quoted in Dead Pixel Warranty Policies.
- 01Definitions of a stuck (bright) and a dead (dark) pixel, the advice against pixel-fixing software and pressure, that a stuck pixel stays stuck, that dead pixels cannot be fixed, dust, and warranty coverage (article last modified 06 Jul 2026): Dell, Display Pixel Guidelines — retrieved Sep 25, 2026.
- 02That stuck pixels have the potential for correction through software methods or physical manipulation, that dead pixels can sometimes be fixed without guarantee, and its suggestion to press gently with a soft cloth (a glossary Lenovo says is for reference only and may contain errors): Lenovo, What are Dead Pixels and How to Fix (glossary) — retrieved Sep 25, 2026.
- 03That pixel defects cannot be fixed or repaired, and replacement within the warranty above the allowable number: Acer, Defective or stuck pixels — retrieved Sep 25, 2026.
- 04A transistor leaving a subpixel off or on, dust mistaken for a pixel anomaly, and having the product examined (published March 9, 2024): Apple, About LCD display pixel anomalies — retrieved Sep 25, 2026.
- 05Stuck pixels remaining lit in one color, and physical impact or pressure on the screen as a cause of dead pixels on Galaxy phones (last updated June 18, 2026): Samsung, Why does my Galaxy phone screen have a dead pixel? — retrieved Sep 25, 2026.
Try the tools
Vivek Kumar runs ScreenTail from New Delhi. He has worked with computers for about 25 years and studied Computer Science. He is not a display engineer or a color scientist, and each guide says where its facts come from so you can check them.