broken

i did that to repair a nvidia driver problem and now my pc is broken. I don't know what to do, does anyone help me?

Hi This is Greg and I've developed a trait, in my old age, I like to see how things work. And I'm disliking "windows" more and more each day, as I grow older. I finally broke my "Tessa". I was adding things in terminal, like Kodi and Mythtv, to see how things worked and if I liked them. In...