electrical buzzing

Recently, I purchased a cheap lavalier microphone, the Boya BY-M1, and noticed that the recordings have a constant electric buzzing noise, similar to the sound produced by a Tesla coil. This issue only occurs when my laptop is plugged in, leading me to believe it’s a case of electrical...

Hi, the laptop is less than a month old. I think the noise is coming from under the keyboard, more on the right side. It is a very quiet noise, but can be heard when the room is silent/quiet or when I go with my head near the keyboard. Does your laptop make that noise too? Is this normal or...