At random times even when not browsing the internet? It still happens to me (original poster) and I noticed many times it was just after I changed tab on the browser or clicked something. Could just be a coincidence, of course. But it's frustrating that no one can find a solution and nothing works.
I've updated and disabled multiple drivers, unplugged internet cable and other tools, used only internet cable without wi-fi, did all sorts of memory and disk diagnostic, upgraded Windows to 1909... Nothing helped. I have the 2004 upgrade ready to download but at this point I have no hope of it fixing the issue (one other commentary had no luck with that either).