Yesterday i had dropped my camera and everything is working except Auto focus while using view finder but on LCD it is working fine and pictures are coming good. All is good except Auto focus, I have reset all the settings still no luck. Kindly let me know if there is anything i can do to make it working
Well, it most likely would have developed a fault that resulted from the fall. Surprising how it still works well in LCD and doesn't in the viewfinder. Nonetheless, have it serviced or repaired by the Manufacturing company itself to prevent further damages. I'd advise you not to try to open it up yourself.
I honestly doubt if this would work, but try changing lenses, from kit to prime or which ever you have. If it still persists, get it fixed.
You could improve your question by including what model of camera you are talking about, a Nikon, Canon or Sony.