Dead or stuck pixels are fairly easy to spot even without special tools since they tend to look like. After detecting your monitor's stuck or dead pixels, you can use PixelHealer's. Give your laptop an extra screen anywhere.
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Please Support the EFF!Like our subreddit? Want to pay it forward?Consider donating to the Electronic Frontier Foundation!They give you stickers! Other Subreddits. A couple days ago I came back to my room and to my surprise there was dead pixels on the screen.
I carry my laptop in my backpack along other stuff (a bunch) and probably over pressure or a hit (I really doubt it) may have caused it.I've read about the differences between dead and stuck pixels, and it looks like the pixels become stuck (turn red) and then die later in the day. It started with a couple of small patches of dead pixels but they have been spreading without stop.I tried massaging the pixels and several software to unstuck the pixels, but neither worked.My laptop is a Toshiba Tecra A10 (old, I know), with Windows 7/Ubuntu 16. I've never disassembled this one, but if I have to I'll do it.Album of evidence:Cheers!EDIT: BREAKING NEWS, the hole to the side disappeared and the other one became very small and went lighter (I can see stuff behind it). This thing refuses to die.EDIT 2: After 3 months, the dead pixels have not come back. Same use, same treatment.