I upgraded Ubuntu today from 13.04 to 13.10. After it finished downloading and installing it in Ubuntu I restarted my computer selecting Ubuntu in GRUB (as I've also got Windows 8.1 on my PC). However my PC just freezes on the boot screen. (as seen here but all the lights are orange: http://ubuntuhandbook.org/wp-content/uploads/2013/07/ubuntu-boot-flash-screen.jpg)
I can load up 13.10 in recovery mode after going though Advanced options in GRUB. Everything is there and going into Details says I'm in 13.10, I just can't access it though the normal Ubuntu option. I've tired to reinstalling ubuntu-desktop in CLI mode but with no luck. Does anyone know a way of fixing this?