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High pitch noice from Laptop while on battery

HP Recommended
Microsoft Windows 10 (64-bit)



I got a high pitch note when my laptop is on battery. When i put the power adapter in, its gone....

I have found multiple threads about this problem, but none is working.

Maximum cpu performance is 99%.

Bios and everything is updated to the latest version.


It is a HP Zbook studio x360 G5 - 4QH33ESR#ABH


I hope that someone can help me  😁

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