So you shouldn’t be removing that, but you can of AVG Zen. UPDATE 1: AVG is forcing is Zen upon us, they’ve removed the offline installer from their download page, which I’ve mentioned above and included Zen with Online installer.
So don’t install AVG using web installer provided by the company, instead go for standalone installer, which is not installing Zen at the moment.
The systemic problem of AVG crashing Windows computers is almost an annual occurrence.
If a crash happens to your computer, here's how to recover.
May 9, 2017 Update: It’s not possible to install AVG Free Antivirus 2017 without zen even though offline installer is available.
Even choosing ‘Custom installation’ and selecting ‘basic protection’ still installs AVG Zen on user’s computer along with AVG Antivirus Free 2016.
This document, titled "Manually update AVG anti-virus," is available under the Creative Commons license.