Just want to make sure you are aware that 17.04 has DNS issues with some systems. Sounds like you had your network working at one time so it may not apply to you. Anyway, here is a link that explains how to apply a workaround. This also applies to a live session.
https://ubuntu-mate.community/t/wifi-issue-in-17-04/12622/15?u=steven
This is normal. Any flavor of Ubuntu you have installed will be identified as Ubuntu by the installer. It works the same way in Grub if you have more than one Ubuntu installation.
Good call brother. Me either
So where are you with your current system? After you reinstalled and the boot loader failed to write where you able to boot your system, or is it dead?