Do you get that noise if you disconnect the laptop from the AC power supply and just run off the battery? If it's clean on battery, you probably have a ground loop problem with the laptop power brick. In that case, check out this video for some ideas to try.

https://youtu.be/jSA2F1AwboU


John

Laptop-HP Omen I7 Win11Pro 32GB 2x2TB, 1x4TB SSD
Desktop-ASUS-I7 Win10Pro 32GB 2x1.5TB, 2x2TB, 1x4TB SATA

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