The thing is that I can hear my flash drive working, eg: while copying some files. Where should I look to fix that? Maybe it is related to bad grounding?
Some times when the GPU is doing too much graphics processing, I can hear it too.
Motherboard: Asus P5QC Headphone at the front output
Similar problem at: "Why can I hear the cursor flashing on my screen through my headphones?"
But I doubt that is related to my headphone quality or cable. The problem is before it, inside the computer case.