Noob here. I just installed 13.10 yesterday And it booted up for me several times and all was well. Then this morning when I went to boot I received a "No such device" error and a "grub rescue" command line prompt. I tried running the live disc and re-installing Ubuntu 13.10 However that was a fail. The same messages kept occurring. Then I tried to boot up in Windows 7. Also a fail. I then attempted to run a Windows 7 restore disc. You guessed it - Fail. This sucks. What do I do?