Editor>Help>Deactivate.
If the computer is broken and you can't do it that way, the only other option is to contact activation support:
http://helpx.adobe.com/x-productkb/policy-pricing/activation-deactivat ion-products.html
Editor>Help>Deactivate.
If the computer is broken and you can't do it that way, the only other option is to contact activation support:
http://helpx.adobe.com/x-productkb/policy-pricing/activation-deactivat ion-products.html