Hollyecho, This thread was begun 8 days ago and now you are covering a LOT of OLD ground here advising the very same steps which have all ready been fully completed:
AVG has all ready been removed and replaced by Avast as noted HJT log in post #14. All the Norton stuff you noted have all ready been taken care of as noted by the poster in post #15.
Unnecessary start ups were listed in post #17 and recommendations on how to stop these were noted AND also taken care of as demonstrated by the latest HJT log.
Malwarebytes' was all ready updated run over 1 week ago and came up clean in post #3. Finally poster DID post he is continuing to have problems in post #22 2 days ago. He also posted his hard drive is 95% FULL and he only has 1GB of RAM. I gave him my recommendations yesterday and he has yet to post back.