You are posting from desktop Premier. If you used desktop software then the tax file is only stored on your own hard drive. It is not stored online in a TurboTax online account. TurboTax online will not show anything about a return you filed using desktop software. Not sure why you say your computer would not save a copy. When you use desktop software it does not autosave. You have to go to File and click Save.
Maybe you are looking in the wrong place on your computer for your tax files.
https://ttlc.intuit.com/questions/1900721-find-your-tax-data-file-tax-file-in-windows
**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.**
