Wow, never heard of that and it's never happened to me either. Since you've tried all the obvious things, I would keep trying different mice. Find a PC repair shop that also sells used PC's and pick up some different mice cheap. A shop like that probably has other different used pieces too. Anything that can be replaced cheaply I would replace. Video cards, modems, network cards, the A drive, whatever. I'm thinking about swap meets that go on around here on the weekends. One I go to occasionally has tons of used stuff like this in bins for a buck or two each.

Bob

Biab/RB latest build, Win 11 Pro, Ryzen 5 5600 G, 512 Gig SSD, 16 Gigs Ram, Steinberg UR22 MkII, Roland Sonic Cell, Kurzweil PC3, Hammond SK1, Korg PA3XPro, Garritan JABB, Hypercanvas, Sampletank 3, more.