I'm a complete n00b to Ubuntu. I recently installed Ubuntu in the Parallels virtual machine (version 9) on OS X Mavericks. It was working fine for a while. Then it asked me if I wanted to update the system. I should have said no, apparently. I have deleted and reinstalled the virtual machine several times (including reinstalling the old version that worked before), but in each one I get a bug. At one point I had a launcher on the screen, but when I did anything the screen would flash white and nothing would happen. Most commonly, including in the current version (14.04 Mac), I have no launcher and no pull-down menus available. I can't even press Ctrl-Alt-T (or Cmd-Alt-T) to get a terminal. All I can do is access the shortcuts on my desktop, which take me to a file manager where I can't find any applications (including the terminal).
I'm not currently looking to use any apps. For now, I just want to get myself a damn terminal so I can compile things. I looked at this solution - Unity doesn't load, no Launcher, no Dash appears - and it doesn't work; pressing Ctrl-Alt-F1 at login appears to do nothing.
Should I deinstall Parallels entirely? Is there something else I can do?