Edit : well, unless you have the MB-D11, in which case pressing the joystick will for example reset to center AF sensor. Haven't checked if it can be used as OK in all cases (menus etc.), mine is at my dealer for repairs.
@gauravd, you have asked this same question three different times, each on different threads. You should stick to one :-) In any event since your multiselector was damaged in the snow, I would take @johnyapple's original advice, but also make sure you have pulled the battery out for at least a day.
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Edit : well, unless you have the MB-D11, in which case pressing the joystick will for example reset to center AF sensor. Haven't checked if it can be used as OK in all cases (menus etc.), mine is at my dealer for repairs.
http://forum.nikonrumors.com/discussion/208/d7000-problems#Item_10