pickit3 can not read, write hex file therefore i can not do pic board things. Usb cable is pickit's own cable and its short.Is anything else connected to any of the PIC pins used by the PICKIT interface?
Normally the only thing you should have is a 10K resistor from reset to power, on the PIC board.
Also, what is the cable length from the PICKIT? It can only work with very short connecting leads, up to a few inches.