Hello!Thank you for your question. I am Shefin and I look forward to helping you with your issue today.
May i know the fourth step, that you are experiencing issues with? Is it adding the state?
S H E F I N
Try downloading and installing latest .Net Framework for your computer from the link below, and then try installing Turbotax again.
If the issue persists, can I access your computer remotely and help you resolve the issue?
Please make sure that you have installed all latest updates for your computer.
Then, please check the instructions in the link below.