Hello I ran into some configuration issues on my ubuntu 14.04 because of this I am not able to connect to Internet from any means.

So I want to re install the os. I currently have 14.04 and I want to install 14.10 but without losing the data I have. I have deja-backup.

So what process should I follow to achieve this. Moving data from one machine to another is cumbersome process. I use sony viao laptop which has only 1 hard drive.

Thanks in advance! !!