sorry for delay, went out of town.
after second 3rd party scan, "fake" windows security alerts window pops up and says Avast is not turned on, while Avast itself says it is secure. I say fake becuase I think the real window says "windows security center", not alerts. Also, no links on startbar are functioning, I can't open notepad or any other item on list, can't restart computer or turn off. So I had to manually shut down computer and restart to run the
autostart scan. After restart, all was back to normal.
If you need all three scans to run at same session, I will have to run again and hope that doesn't happen again.
thanks for your help