More followup- I updated the Avast Program with nothing else open
and no other internet connections open either and it made no difference.
As soon as my system restarted, the popups began once again, and they continue now as I type this
reply.
One additional note to add: in my popup window, the Process is noted as being different that that
noted by the O/P of this thread.
In my popup window, the Process is listed as: C:\WINDOWS\SYSTEM32\svchost.exe
The popups appear one at a time, 1 thru 13 of them at the moment. as 1/1, 2/2, 3/3, 4/4 etc
After the 13/13 appears, the popups end for about 60 secs, then start all over again.
Hopefully all this will be useful to help solve this issue.