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My 10 year old monitor (Dell s2240L) recently started rendering some colors incorrectly. They are instead rendered in black color. Are these dead pixels? What could be the reason behind this problem ?

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Above pic taken with a mobile phone

Edit 1:

Pic with white background, the spots on the screen are dust I assume, I cannot wipe it off from outside.

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Above pic taken with a mobile phone

Edit 2:

Display information from Windows

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  • A dead pixel. would be show as a white pixel, not black pixel.
    – Ramhound
    Commented Jun 8, 2022 at 13:49
  • What is your colour depth set to?
    – spikey_richie
    Commented Jun 8, 2022 at 13:55
  • Can you add photos with a pure white screen too?
    – Journeyman Geek ♦
    Commented Jun 8, 2022 at 14:02
  • @JourneymanGeek Added pic with white background
    – Prem Ramman
    Commented Jun 8, 2022 at 14:09
  • @spikey_richie Its 8 bit, I added a screenshot in question
    – Prem Ramman
    Commented Jun 8, 2022 at 14:15

1 Answer 1

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That's not a screen issue - a dead pixel is always dead, not just when you try to display a certain color.

My guess is that this is a graphic card problem, or maybe a software issue. Can you borrow another screen and try it (same issues - it's your computer for sure), or try your screen on some other laptop or PC.

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  • I have tried it on two intel laptops and one amd laptop, the issue reamins the same
    – Prem Ramman
    Commented Jun 8, 2022 at 17:47

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