If you were using online TurboTax, your return is in your online account and you can access it from any device that has internet access. But...if you were using the CD/download, the return is not stored online. It was only stored on that computer's hard drive. If you cannot retrieve it from the hard drive ----has a "Geek Squad" person or someone tried to recover your files ? ---- then sorry to say this, but you will have to download the software to your new computer and start over. Moral of the story---always, always, always have a backup hard drive or backup device connected so that you can recover important data if your computer crashes.
**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.**