i tried to get kde plasma on my fedora, when i booted it up there was just a black screen. i couldn't type any commands either, it was toast
thankfully i've got windows dual booted because i'm a filthy 
who uses it for vr games. unfortunately windows doesn't let me see my linux drive's files so all of my personal files are unrecoverable.
thankfully i think the most i had on my computer was my music (yt-dlp is so easy i can get it all back in 30 minutes tops) and a few files from some project i was working on, sucks but not worth spending hours troubleshooting. oh well.
on the bright side, i'm RETVRN-ing to my old reliable, linux mint with xfce. i'll miss hot corner and the other niceties that gnome has but xfce will be a bit more comfortable for me.
There are a number of ways to access your Linux drives from Windows (I did it regularly when I ran Windows) and if your drive hasn't been wiped your data is probably all accessible. Here's a link that should help: https://www.howtogeek.com/112888/3-ways-to-access-your-linux-partitions-from-windows/
It sounds like the system booted. They probably just need to switch to a virtual teletype.