I've had this phenomenon ever since I got the laptop.
If my laptop is plugged in and I record audio from the mic, the background noise is huge. If I unplug the laptop, the noise reduces a lot. However, if I touch the laptop with my bare skin, the noise becomes significanly more quiet in both cases.
Is it because my sockets don't have a grounding? Does it affect me since (i'm assuming) elecricity conducts to my body? Is there a way to drain the leakage so that I can release my hands from the laptop and make gestures while recording myself speak?