After trying everything Avira and Avast still will not install.
AVG is too much of a resource hog for me to try again.
PCTools is the other one I had before but I got rid of it because it kept closing on me and not responding.
I am now going to try the new one out ....Microsoft Security Essentials and hopefully that will work.
The reviews from CNet and other sites sound alright but then again it's a Microsoft product.
Wish me luck.