The tag below your question says that you are using TurboTax Online. If that's correct, TurboTax Online is not installed on your computer. You can access TurboTax Online on your new computer by signing in from your web browser, using the same user ID that you used on the old computer.
If you actually used the CD/Download TurboTax software installed on your old computer, you cannot copy the TurboTax program from the old computer to the new computer. You have to install the program on the new computer, just like you installed it on your old computer. You can copy your tax return data files (the *.tax2023 files) from the old computer to the new computer.
When you start TurboTax on the new computer it will not automatically find the copied tax return files. On the first screen, click "Find a Tax File" to locate a copied .tax2023 file and open it.
