Inconsistent scan results

Hello Mrs Sherill,

I apologize for the inconvenience caused to you. The "fix performance" option from AVG internet security is used to analyze the error in your pc and in order to fix this you have to purchase the AVG pc Tuneup program. Please contact our sales team to purchase the program with good discounts: https://support.avg.com/support_sales?l=en_US
Please feel free to contact us if you are facing any issue.
Thank you.

Earlier, I ran the "fix performance" part of my AVG security package which detected Registry errors, fragmentation, etc and told me it had fixed them All.
I then tried =the free version of Tune up which discovered the same problems and more and, apparently fixed them all except disc fragmentation which, I was told, could wait until next scan. 5minutes after completing this run & remedy of Tune Up, I rant it again and there were still Registry errors - although only 90 or so nratherthan the 500+ of first Tune up run. This time, hard disc needed defragging which, so far, has taken more than 1 hour and is still going strong.

Help please.
The original problem tthat got me startted on this is that my system suddenly decided to make MSN, rather than Chrome, my default browser and is resisting all attempts to change this and / or to remove both MSN & Chrome from my system.
Any ideas on that mess?
Chris

Hello Mrs Sherill,

I apologize for the inconvenience caused to you. The "fix performance" option from AVG internet security is used to analyze the error in your pc and in order to fix this you have to purchase the AVG pc Tuneup program. Please contact our sales team to purchase the program with good discounts: https://support.avg.com/support_sales?l=en_US
Please feel free to contact us if you are facing any issue.
Thank you.