for the past three days i cant make call or receive calls as i have this black square clock like on the screen,i tried taking off the battery when the phone is on but immediately i put the battery back, this clock comes back,i have tried alot of things like connecting it to my pc for sync but cant connect,somethin show this Error63--RESET,but this clock comes back,try holding down alt+aA+del,none work.please i need help on how to get rid of this