Thank you for your kind reply, there were no barriers . I understood the answers given and the mannor in which they were given.
Here is what I did. I just went into control panel and uninstalled from there and reinstalled new one from link above, Is that o.k. There is only one avast listed under programs and features now.
no I did not use avastclear.exe nor attempt to go into safe mode.
Thank you again for your patience and kindness.