Capacitor whine? My laptop actually makes a quite loud noise when I run a large recursive grep and it has to read from the SSD. It’s a little surprising because it’s not super high pitched; it almost sounds like a mechanical disk seeking even.
I hate to be the one to tell you this, but we snuck into your room and replaced your SSD with a Winchester disk two months ago.
I actually do hear one on mine (Acer X213W) but only when the bars are thin, and making a high pitched tone.
We tried it on three monitors in the office they all gave off tones.
On my previous laptop I could hear some tone when scrolling my terminal, I wonder if it’s related.