I forgot to close my laptop or lock the screen before I went to work the other day, and when I came home my laptop was stuck on a black screen. I should also mention I have a cat who loves to walk and sit on my keyboard and I feel like she was probably the cause of this(I left bash open). I can get to grub when I restart, but if I try to boot with Ubuntu I just get the black screen again. I can't access the login page. I also have Windows 8.1 installed and I can boot that with no problem.
Any help would be greatly appreciated :)
Edit: I think it may be an issue with my drivers for my graphics card. I have an AMD Radeon HD 8510G. I haven't been able to bypass the black screen to update my drivers though. There was another post about this but the instructions weren't working for me. I tried changing quiet splash to nomodeset and radeon.modeset=0 but I still get the black screen when I boot.