If you have not already done so, reset the camera using the following instructions.
Press the Menu button
Select the setup menu tab (the wrench icon)
Select Reset all
Select Yes or OK
Allow the process to complete
Next, the one thing that even experienced photographers miss is that a single small spot or smudge on the lens can cause the problem that you are having. Carefully clean the lens again and look for any scratches. Depending on the environment that you are shooting in, a haze can build up on the lens and cause incorrect readings and the shutter may not release until accurate focus has been achieved or the camera will focus at the wrong distance.
Please keep in mind that my diagnosis & solutions provided are directly dependent on the accuracy of your description of the problem. As with any "do it yourself" fixes, success is a "team effort", since I can't see or touch the camera, and relies on the customer's manual dexterity and ability to follow the instructions well.
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Did this issue just suddenly start? Previous photo OK then next ones were fuzzy?
Is the image displayed while shooting out of focus?
Does the lens move and attempt to focus when taking a shot?
Are the same photos fuzzy or out of focus when viewed on the computer?
If the reset did not solve the issue then, unfortunately, the symptoms indicate that there is a problem with the ccd (the light sensitive chip that produces the image or the connection to it, most likely a factory defect . professional repair is really the only option and while your camera was not on the list of cameras on the free repair program listed in the link, the information at the link below does explain this progressive or sudden problem and tells how other camera makers handled it. This failure can also be caused by an impact. You are now the 4th person in a three month period, with a digital camera that I have advised of this type of problem.
Contact Nikon at the link below because they may be willing to correct the issue for you since this is a relatively new camera.
If you require additional information, please use the Reply to Expert Tab to contact me. Click the ratings only after our exchange is complete and you are satisfied.
If you are satisfied that my answer is accurate, please do not forget to use the rating icons to rate my answer.