By default, TurboTax saves tax data and PDF files in the Documents (or My Documents) > TurboTax folder on your PC.
The TurboTax CD program does not save to PDF by default. You have to explicitly elect to save it in PDF format.
The default filename ends with a filename extention of .tax2015 for the 2015 tax return. Close the TTX program, then delete the .tax2015 file. It's located in the documents\turbotax folder.
When you restart the program, it's "as if" you just installed the program for the very first time.
