Let me share with you this TurboTax FAQ that troubleshoots installation issues. You may just need to uninstall and start over again. But there are several other possibilities. Hope something here helps.
Troubleshoot installing and running TurboTax on Windows
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
