I've gotta be honest, I should have tried fixing this earlier but I was hoping this would be fixed one year after first happening, this bug started happening once i had updated from Win10 1907 to Win10 2004, but seems to have become more regular since 21h1.
The problem is that my PC gets into some bugged state where it registers about one whole fourth of my keyboard being pressed all at once or in succession, including Shift-, ALT-, Backspace-, Enter-, windows- and basically any other key, as if somebody was remote controlling my pc by slamming his face on thier keyboard. (The result usually looks smth like"wwwwwwwwwwwwwwwwwwwaaaaaaaaaaaaaaaaaaaaaasssgggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggJJJJJJJJJJJJJJJJJJSEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEWWWWWWWWWWWWWWWQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQAAAAAAAAAAAAAAAAAAAAAAAAAAAAxxxxyswdddddddddddwww")
This seemingly happens at random and prevents me from doing basically anything on my PC since it overwrites my own keypresses most of the time and registers so many other keypresses so that my Pc tries to open, and type into, multiple tabs at once, preventing me from restarting or even saving documents sometimes.
Once it starts happening it doesn't end until the system is rebooted and sometimes it starts minutes after starting up my pc, other times it doesn't happen for a day, but usually this happens at least once a day, also I've got no idea what could be causing this "phantom inputs-bug"(for Lack of a better term) but it got into this state under numerous circumstances, for example while playing some different games,or while having literally nothing except a single chrome tab opened, at least it doesn't seem to be caused by any of the applicatins I've opened myself.
Interestingly my mouse is unaffected everytime and i cannot seem to find anyone who had the same problem, though that might be because I don't know whether there is a name for this kind of bug since i never heard of this before installing Version 2004.
I've now rolled back my pc about as far as I can to be at least able to type uninterrupted and maybe even use this machine for longer than an hour in succession.
Also: Yes I've tried updating my pc to the latest verrsion before rolling back but quickly after updating (which was today btw) I've had this exact thing happen again twice, so I rolled back all I could and could at least write this very text without this bug occouring within 10 mins after booting.