試試 reset the D700 to factory default? 。。。。

Instructions

1
Rotate the "Power" switch to the "On" position to turn on the Nikon D700 camera.

2
Press the "Qual" button, located on the top left of the camera, with one finger and hold it while also pressing the "Exposure Compensation" button, which is marked with a plus-minus icon and is located on the top right of the camera.

3
Wait for more than three seconds while still holding the buttons down, until the control panel turns off briefly while the camera resets itself to the factory default settings. Release the buttons.