My RAM arrived. Installed, winblows memtest at least said no issues found, desktop seems fine/usual etc. I didn't enable XMP. So now I get to see if new ram means games won't cause random system reboots in 1 minute or 2 hrs. Which means I have to turn on/play at least a few different games, for such sessions, multiple times to try to trigger reboots. It's a difficult task, but for the sake of knowledge, I shall endure.
I really don't want to build a new PC (yet) and have to spend days/weeks setting up/refining all the stupid O/S, software and bajillion data transfers. So, please be fixed, gimmie another year or two, please.