You can copy your tax return files from your old computer to a USB drive, or a cloud storage system. Then use the drive/cloud storage with your new computer and copy the files there.

You can download the current version of TurboTax CD/download edition here:  Choose the 2023 TurboTax edition you need (for Windows). You can download older versions of TurboTax CD/download edition here: Where can I download the CD/download edition of TurboTax?