Recently installed a 30day trial of Lightroom cc, unfortunately after day 2 of use, my windows 7 wont come up and had to restore loosing the software in the process, how do i get the trial back?

Recently installed a 30 day trial of Lightroom 5 cc, unfortunately after day 2 of use, my windows 7 wont come up and had to restore loosing the software in the process, how do i get the trial back?