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I suggest contacting the manufacturer. My monitor also makes noise, which I believe is the cooling fan for the CPU. My cooling fan sounds like it is speeds up and slows down every second, and I find the constantly changing noise intolerable.
Sorry, there was a problem. Please try again later.I replaced the fan (manufactured by AVC) on a similar model (HP 22 All in One) and it makes the same constant high-low pitch noise. I think the fans are just defective and the bearings are slowly starting to fail. Will try replacing again with a compatible part by Delta.
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