I completely messed up my things, I was using ubuntu 14.10, yesterday I was updating it and during the installation my laptop got switched of as it ran out of battery and then I do not know what exactly happened, now when I switch it on all I get is a black screen with cursor blinking there, I am not that good with softwares as I am a medical student and have many important file there which I definitely do not want to loose so please let me know if this can be fixed or not I do not want to loose my things there... And by reading many post I tried doing some things on my own so I used:
Ctrl+Alt+F1
and then on my black screen I this little explanation about ubuntu there help site and then this error:
E: Error: BrokenCount > Orun-parts: /etc/update-motd.d/90-updates-available exited with return code 255
Please help:(