I have a similar electrical issue at my house as well. I plug my laptop over I USB-C into my AC-DC converter, which comes with a two-prong US power cable, which is connected to a two-prong US-EU adapter, into a power strip connected to the wall (EU outlet). My laptop wrist rest is also "spicy" (most noticeable if my girlfriend touches my arm when I'm typing, we will both get shocked). So I obviously have a grounding issue but I'm at a loss because the equipment doesn't have anywhere to attach a ground rail to. Any suggestions?