I just reinstalled Ubuntu 12.04 (LTS) 24 hours after I first installed it. I really screwed up the initial install when I tried to update the Nvidia driver from 3.04 to 3.19. (I have an Nvidia GT220)
First time I installed the update from the icon in the top that said new updates were available. When the computer restarted it hanged on boot with a message: "starting load fallback graphics devices fail". I tried a couple things I found on the Ubuntu forums and the commands either didn't work or it completely messed up my install due to me just imputing any command I found online. So I ended up doing a complete reinstall.
Now I have the fresh install....I get the same pop-up about a driver update but I haven't touched it. Do I click on the update? Download directly from Nvidia? Or do it from the terminal? A step-by-step would be much appreciated. Also if I get the same error, how do I fix it? Please explain what I need to do, while I am familiar with the workings of DOS/Windows, I have no idea what I am doing in Linux (no idea what the xorg file is, how to change directories in the terminal or anything)