A pixel that won't behave is the smallest possible screen problem — and somehow one of the most maddening, because once you've seen it, you can't unsee it. Whether anything can be done depends on which of three types you have, so the first job is identification.
Dead pixels are black. The pixel's transistor has failed and it no longer lights up at all — it shows as a tiny dark dot on any bright background. Dead pixels are permanent; no software revives a failed transistor.
Stuck pixels are frozen on one color — a red, green, or blue dot that stays lit no matter what's on screen. The subpixel is receiving power but not instructions. These are the only type with a real chance of recovery.
Hot pixels are stuck bright white — all three subpixels jammed on. Treat them like stuck pixels, with a slightly lower recovery rate.
To identify yours: view a pure white image full-screen (a blank document zoomed in works). Black dot = dead. Then view pure black — a colored or white dot glowing in the dark = stuck or hot.
For stuck pixels, a pixel-cycling utility rapidly flashes colors at the stuck spot for an extended period, which can jolt the subpixel's circuitry back into responding. Free options like JScreenFix run in a browser — position the flashing zone over the pixel and let it run for 30–60 minutes. If nothing changes, a few hours is a reasonable last attempt. It works often enough on stuck pixels to be worth the electricity; on truly dead pixels it does nothing, because there's no circuit responding to flash at.
One method we'd steer you away from: the pressure trick — pressing on the pixel with a cloth-wrapped finger. On modern thin panels it crushes liquid crystal more often than it fixes pixels, and a crushed spot is bigger and uglier than the dot you started with. (We cover that damage in our black spots guide — it's a one-way trip.)
A single dead pixel in a corner is a cosmetic flaw you can reasonably live with — even panel manufacturers' own standards tolerate a small number before a screen counts as defective. The situations that warrant action:
A cluster. Several dead pixels grouped together usually means localized panel damage, not random transistor failure — and clusters tend to grow.
A spreading count. More dots this month than last month means the panel is actively failing. That trend doesn't reverse.
A dot in your working area. Dead center of the screen is a different quality of life than the bottom corner. You don't need to justify wanting it gone.
Pixels can't be repaired individually — the fix at that point is a laptop screen replacement at our Somerville shop, matched to your exact model's resolution and finish. Most standard panels run $180–$240 installed with a 90-day warranty, and a fresh panel means zero defective pixels, guaranteed by that warranty.
Not sure if yours is dead, stuck, or the start of something spreading? Bring it in and we'll tell you honestly — including "live with it" if that's the right answer. Dave's Computers, 75 N Bridge St, Somerville NJ (behind Bank of America), Mon–Fri 10am–5pm, Sat 9am–2pm, walk-ins welcome. Call 908-428-9558.