My gf was on my PC and was trying to install a student version of office, but instead she installed a student version of windows 10...on top of my windows 10 pro.
Everything seems to be working the same, however, I get the activation notification now. I used my legit copy of windows 8.1 and did the free upgrade to windows 10 a while ago. I tried entering my windows 8 key, but it is not working.
I went to windows 10 recovery utility and tried the roll back to previous version, but it is saying the files needed to roll back have been deleted.
I haven't deleted anything yet. I did notice a
Windows.old folder on my C drive. I assume it is looking for that. As far as I can tell it is all intact.