...it's because I followed the Windows Update Download error message instructions. Seems instead of deleting the temporary download file for updates, the computer ate that file, plus my ability to download ANYTHING!
System Restore then caused my anti-virus program to demand my license number and no matter how many times (or reboots) after being fed that info, it doesn't know me either.
So as I mull the horrors of a System Recovery, I'm backing up all my files. At least I know the password for here by heart.
Hope to check in soon. Have a great weekend...just in case I can't tell you that later.