How did you install it the first time? Did you use the CD or do the download method? If you used the CD you may have a problem. Otherwise you download it the same way.
Access your downloads here
https://shop.turbotax.intuit.com/commerce/account/secure/login.jsp?pagecontext=download
How to download your software purchase
https://ttlc.intuit.com/community/installing/help/how-do-i-download-the-software-i-purchased-at-turb...
