Ok, ok! I'll (try to) be helpful! ?
Download the free version of Glary Utilities here: https://www.glarysoft.com/glary-utilities/download/
Install and feel free to run the 1-Click Maintenance scan if you'd like (it's pretty awesome!).
Then, click on the Advanced Tools menu tab (on the right side).
In the middle you'll see a grouping called System Control. You'll want to click on the Startup Items link under that (should be the first link).
Take a look at everything that is set to automatically start upon boot-up (Startup Programs). You may find some things that are just wasting resources, but you should also find whatever is running to show you that upgrade annoyance. The second place to check is the next tab over called Scheduled Tasks.
Whatever is constantly causing that upgrade pop-up has to be in one or both of those areas! Just disable it and you should be good to go! ??