It's very difficult to help with this little information.
How is the AF set up? Back button or shutter release half press? Which lens is it and is it set to AF. Have you tried more than one lens. Have you tried cleaning the lens and body contacts?
Please tell us some more.
It is not focusing on the subject
I am using AF mode and coming to manual mode its working.
basically the focus point is not working..its not focusing on the subject as we half click the shutter it focus on the subject, in my camera its not working.
please help me out.