My wife dropped our D5100 and now the camera will not take pictures and has a black screen. How do you fix this issue?
If you don't know what are you doing while you are trying to fix your camera, do not fix it your self. Take it to the service immediately, because you can make more damage then it is currently.
Whats happening is that the shutter stays closed, it is a quite normal issue on D5100, to fix to as follows:
You can check that this is happening by setting camera to video and you will see no screen but sound will be recorded.
Set to manual mode, set minimun shutter speed as so shutter stays open for a while, during this, hold camera with one hand knock it with the other one until shutter un-stucks.
It will work and now you owe me a beer.
The 99% likely best answer is, of course, to send it to a competent camera repairer.
However, just in case, and very very unlikely, try the following.
protected by mattdm Jan 23 '14 at 20:31
Thank you for your interest in this question. Because it has attracted low-quality answers, posting an answer now requires 10 reputation on this site.
Would you like to answer one of these unanswered questions instead?