Porbable virus in Windows 10


I have a windows 10 machine with AVG Free antivirus. Lately everytime I boot the machine up as soon as it gets to the desktop Chrome opens up on its own with a suspicios add to download stuff I do not need and a pop up to enable notifications from that site.

I ran several full scans and today a boot scan but I am unable to get rid of this.

What do you guys recommend?