You will not be able to file a 2014 return using TurboTax. Software for 2014 is no longer available. You can get the forms from the IRS to prepare by hand or you could use a local paid tax pro to prepare a 2014 return for you.
https://www.irs.gov/forms-pubs/prior-year
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**