Not Able to Login to My Ubuntu 14.10

I have Ubuntu 14.10 installed on my system and i am not able to log in to my machine as it is not showing my account on log in. Only Guest account shows there and also when i try to log in to Guest account, it shows black screen and then system Restarts. Can anyone help me with this please.


Hi Gunjit do one thing shift the terminal by pressing ctrl+alt+f3 and try to loging after loging once check the space which is allocated to you machine and also once look at the below command.

#mv .Xauthority .XauthorityBak

restart the machine.