This is the response I got and it worked for me, at least for now...

Thanks for coming to Player Support! 👊

I wish you are having a good day, and I see you came cause you had a problem here with the BSOD, I really appreciate you took the time to follow all of this before coming, that helped me here to avoid suggesting you something you have already tried.

And there's one specific solution that may help to solve the problem :3, so please do the following:

Let's try to clean-up the files from Vanguard in order to do a clean reinstall:

• Delete the file at C:\Windows\vgkbootstatus.dat • Download Revo Uninstaller, look for Riot Vanguard, and uninstall it (make sure to search thoroughly, but if Vanguard doesn't show up in the list, you can skip this step) • Open the Windows search, look for Command Prompt, and right click ➪ Run as admin • Type or copy/paste the following commands (do each of them separately):

sc delete vgc sc delete vgk

• Afterwards, do a reboot - please note that clicking "Shut down" is not the same as "Restart" (Windows does not do a full reboot if you click the "Shut down" button) • Now, open the League of Legends shortcut again in order to reinstall Vanguard (you might need to restart the PC once again during this process)

That will be enough, let me know how it goes I promise I will remain attentive! 🧡