i had a similar issue (with me nothing below worked and I did not try system restore or restore from image) what worked was that I back up files and folders. I had a backup of the below folder which included the two .json files. I copied them to the designated folder and then relaunched Turbotax. It worked.
see this link
https://ttlc.intuit.com/turbotax-support/en-us/help-article/install-products/turbotax-2019-turbotax-...
if these don't work try the following
1. Search C:\Users\( your user id)\AppData\roaming\intuit\turbotax\
2. Click into the TY2X folder
3. Delete the two .json files and try launching TurboTax again
note appdata is a hidden folder so you will have to go into a folder and on the view tab in the show\hide section check "hidden folders"
try support to see what it will do for you.
as a last resort other things that might work (i have never tried system restore) but it does have some risk) system restore
2) restore from a disk image. This puts the drive back to what was on it when the image was created.
