To visualize the picture in the live view nikon d5100?

Live view pictures/ nikon d5100
hello, I bought my nikon d5100 just a few months ago, well I did not read the manual… Well the camera is starting with some issue in the live view, I can't visualize the pictures, please any suggestion how to fix it?

Sure, read your manuel "troubleshooting".

http://support.nikonusa.com/app/answers/detail/a_id/17325/~/user's-manual---d5100---guide-to-digital-photography