In TurboTax, boxes that do not apply to you should be skipped over, that is, not only do you not enter a blank, you shouldn't enter anything at all.
Is it possible that you put the cursor in a box and hit a key, then blanked the field out or just maybe put in a blank in it in the first place? Here in the Community, we can't see your return or your screen, so it would help if you could give us a specific example of where this happens:
Please list:
I already done with the taxes. I cannot view any form. It is just come out blank screen
Taxes are done. I cannot view any forms. It shows only blank screen
It is a Turbo Tax Deluxe. I try to view form 1040. Step by step I can view or enter the data
I cannot view any forms. I can do all functions on step by step, but I cannot view any form
When you state that you cannot view any forms, do you mean you are seeing a blank screen?
Please click Troubleshoot blank screens, missing buttons, or missing images to learn more.
If you continue to have problems, please click on the Contact Us form https://support.turbotax.intuit.com/contact/. We’ll help you connect with the right expert for your specific problem.