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?
I recommend you to check your browser extensions, you may have download an malicious extension. Another thing I would do is check your Start-Up folder in your OS. This is all I can think about. Next time don't download or install any 3d software/extension that looks suspicious, same for ads.
The Start-Up folder in Windows located in:
C:\Users\<user name>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup
This seems more like browser hijacking than a virus. There are some issues with detecting this kind of malware with an antivirus software. They might be bundled with a legitimate software or a browser extension you are willingly installing. Additionally, a browser hijacker doesn't necessarily install anything new, but alters browser settings. It's hard to detect whether these settings are wanted or not, unless the anti-malware tool is designed to prevent or find unwanted system modifications.
There are some removal hints on several sites defining browser hijacking, including:
Sysinternals Autostartand run it. It shows anything that starts with the computer, from obvious Startup folder links to autoloaded DLL's. – ThoriumBR Jul 12 '20 at 22:03