Thanks for the help!

Turns out it was a hardware issue - I eventually found that I couldn't connect to Wi-Fi in my mint live usb or Windows 10 on that computer either after a bit more testing. A full power off and unplug seems to have reset whatever was wrong with the Wi-Fi adapter and all is working again, thank goodness.

Thanks again for taking the time to help! It's what I've come to love about this community in the two months I've been in it!