I've purchased a Dell xps 13 with project Sputnik Ubuntu 12.04 pre-installed. I downloaded the ISO from http://hwe.ubuntu.com/uds-q/dellxps/ and for my own reasons I want to reinstall it. I made a bootable USB from it but when I boot from the USB it doesn't give me the option to install, only to trial Ubuntu (without any prompt for such). Even then, it does not see my touch pad or wifi in the trial. Any help would be appreciated. Thanks.