Still no go. Downloaded the OFFLINE update executable, the first one listed in the offline section. Closed all applications including Malwarebytes but did not close Avast. Don't see a way to shut it down other than to kill it in task manager and I did not do that.
Ran the offline executable using Run As Administrator. It told it is installing so "don't turn off your computer." It opened a window that was a solid dark color with only the rotating busy signal in the center. Then that busy circle stopped and just sat there. The laptop was not totally frozen but was extremely lethargic. The mouse cursor would move normally but click on anything and it was 1 to 3 minutes before it would respond.
My laptop does not have lights for the hard drives (1 internal, 1 external) but the software activity "lights" in the tray showed no drive activity at all. Not even a blink.
After 15 minutes I did a hard shutdown and restarted. I still have the old version of Avast active and telling me it needs to be updated, the "attention" indicator on the tray icon.
So, still no go. Any other ideas? Thanks.