I uninstalled Avira. That in itself was a job, as there were five components, which may explain why it took so long to boot up.
This morning it booted in less than seven minutes. :o])
As I was downloading Windoze Defender, I inadvertently downloaded Goober Crime. I couldn’t uninstall that fast enough!
What do you use, Internet Exploder?
That would explain the trouble the rest of us keep having.