I accidentlly hit the yes option on "if I have a IP PIN" and now it won't let me go back and say No

See if you can do it this way so TurboTax won't nag you for it:

  Here's how to get back to the IP PIN interview.   Upon arrival at that section, you may see that question.  If so, you can say "no".   If you don't easily see the question, you may have to start (or revisit) the IP PIN interview to be asked again; i.e., it may ask you once you begin that IP PIN interview if you or a spouse or a dependent received one.

• With your return open, click in the left menu column on TAX TOOLS, then choose TOOLS.
• In the Tools window choose the blue button TOPIC SEARCH.
• On the topic search line enter the term IP PIN without quotes.
• In the selection list highlight IP PIN and either double-click it or click GO.