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‎10-06-2024 04:11 PM

HP Recommended
Product: HP EliteDesk 800 35W G4 Desktop Mini PC
Operating System: Microsoft Windows 11

I bought this computer refurbished. When I plug in the monitor, a number appears in the top right corner and the bottom left corner upside down. The number is not exactly the same But it never disappears. It’s always there.. . What is it and how do I get rid of it?
the numbers are 2N1 0517 and 2N1 1753

help please and thank you 

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