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Why monitor color is incorrectly rendered?

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Why monitor color is incorrectly rendered?

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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답변1

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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