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Two thick grid lines appeared on my monitor suddenly

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I use my monitor between my work ThinkPad and my MacBook. Suddenly, when using with my MacBook, two large grid lines appeared on my monitor display. I would assume damage, but I had not touched my monitored nor moved the desk that it sits on. The monitor was only purchased about a month ago in anticipation of having to work from home. The screen is still very usable, but these two lines will be irritating. Has anyone else experienced this?IMG_2236-2.jpg

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Welcome to HP Community


I have gone through your Post and would like to help


This does look like a Hardware issue. Please check in BIOS if you see those lines


Shut down the Notebook and upon restarting keep tapping on F10 till you see System Configuration Menu


If the issue persists in BIOS, please contact HP Support for Service Options


Click on this link - and select your Country to get the Contact details for HP Support


Thank you


If the information I've provided was helpful, give us some reinforcement by clicking the "Solution Accepted" on this Post and it will also help other community members with similar issue.



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