AVG Clear: to remove AVG Internet Security or AVG AntiVirus Free version 17.0 and later.
Completely uninstall AVG products
Using AVG Clear
Download AVG Clear (above)
You will get a prompt telling you that it is recommended to run this executable file after Windows is booted into Safe Mode. You should click on Yes to boot into Safe Mode and then execute it from there or No to continue as is in the normal boot mode.
Then you get a new page where all the details of the product could be found. You can choose what your product is what paths to uninstall its system folders from.
And then, finally click on the Uninstall button to uninstall AVG Antivirus Software from your computer.
You can Restart your computer for the changes to take an effect.