activating trados 2014 in a new computer

I had my trados 2014 installed in my old computer, which didn't work properly and I had to reformat completely... (So I didn't have the opportunity to uninstal it). Now I would like to use the same liscence in my new computer, but It seems not possible. Any clues what can I do (appart from purchasing a new liscence)?

Thank you

Izaskun