Agvzvwof has hijacked my computer

Patricia, Have a look @ this link (https://support.avg.com/answers?id=906b0000000D5kQAAS).
AVG Guru

I've scanned the computer, and my Avg Pro claims to be up to date, yet this website keeps popping up How do I get rid of them?

Patricia, Have a look @ this link (https://support.avg.com/answers?id=906b0000000D5kQAAS).
AVG Guru