Issues with Tune Up and websites

When I run a scan, I get a message indicating I have many registry issues and junk files.  When I click on FIX PROBLEM, it directs me to the AVG website to download Tune Up.  I download it, but the file will not open.

Coincidentally, I am having big problems accessing the internet.I can quickly get on certain sites - like Facebook and Amazon - but other sites take a very long time to load or never load at all.

I ran Malwarebytes and AVG and neither are indicating a virus.

Are these issues connected?  Could it be a viru?

Thank you.

Leah, Please refrain from carrying out multiple postings on the same subject! You won't obtain an answer to your query any faster!. See other posting (https://support.avg.com/answers?id=906b0000000bmE0AAI).
AVG Guru

Leah, Please refrain from carrying out multiple postings on the same subject! You won't obtain an answer to your query any faster!. See other posting (https://support.avg.com/answers?id=906b0000000bmE0AAI).
AVG Guru