What does this mean? I'm using Ubuntu 12.04 something, and everytime I boot my laptop this comes up. It will actually start up sometimes, but yesterday nothing was working. My touchpad was not working, no programs would open, and my wireless airport wouldn't connect. On the occasion that it would start and I try to pick Windows to boot, an error message would say that there's something wrong with my hard disk. I've looked online and everything I find says to use the disc I originally used when I installed Ubuntu, but I never had one. I downloaded from the site. I need some input. Please.