need technical opinion

[Micheal1]

need you support as my screen is defected and three black circle appear in the bottom of screen as attached , so i ask what can cause this issue? 

[Dragon-Fur]

@Micheal1 

Looks like damage to the screen.

Reference

HP PCs and Monitors - Damaged Screen, LCD, or Display

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[Micheal1]

very thanks for your support , but screen is working properly untill someone tiring to sterilization it. so are you think sterilization could cause that problem? 

also screen from outside doesn't have a scratch , so what can cause this problem is miss use or sterilization ?

thanks again for your help.

[Dragon-Fur]

@Micheal1 

Again, I can only guess...

Remember:  Speculation is useless except as an opinion

The screen seal might have failed which would let in moisture.  Unlikely, but perhaps possible.  It doesn't look like that is what happened but I am not an expert on screen damage.

OR

Pressure on the screen during cleaning  perhaps damaged the LCD.  More likely, though I cannot say whether the damage is permanent or could be rectified without replacing the screen.

Scratching the glass would not likely cause damage of this type - this damage is under the glass.

I've read about this sort of damage - I've not seen it happen.

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[Dianne61]

My computer need updating and cleaning out.