I even downloaded a rootkit detector and ran that! This PC is clean.
This crap that's happening is from and by Microsoft.
I accuse Microsoft, in a desperate attempt to maintain its market dominance and to ensure future income, of sending Windows Updates that they have deliberately, intentionally, and willfully designed to obsolete lower-end hardware.
They are breaking hardware on purpose.
Go ahead and laugh.
Twenty years from now the truth will come out!