I edited my answer above to point out that you might get various other screens before "Let's Check Your NOL." Did you continue through the interview until you got to the screen that says "Here Are Your 2015 Deductions & Credits"?
You didn't say anything about the nature of your NOL. If you didn't get the NOL screen in TurboTax, maybe you don't really have an NOL. A negative AGI by itself does not necessarily mean that you have an NOL. Only certain specific types of losses can create an NOL. The most common is a business loss on Schedule C. The other, less common causes of an NOL are a casualty or theft loss, very large employee business expenses, moving expenses, or a loss from rental property. If you don't have any of those, you don't have an NOL. Investment losses cannot produce an NOL.
If you have not already done so, download Publication 536, Form 1045, and the instructions for Form 1045 from the IRS web site. Read "How To Figure an NOL" in Pub. 536 and fill out Schedule A of Form 1045. Does Form 1045 Schedule A show that you have an NOL?
You had originally included an incident number in your question, though you have now deleted it. I assume that means that you have already been in contact with TurboTax support about this. If Form 1045 Schedule A indicates that you have an NOL, I am going to have to refer you back to TurboTax support to find out why TurboTax is not recognizing the NOL, and what you can do about it.
