Phone wont turn on or charge?

One day i dropped my OPO and after that it turned off and now it wont turn one. I try charging it but it doesnt seem to be charging, the battery doesnt heat up or anything. OI have tried 5 x 20 second battery cycle presses, Fastboot mode, recovery mode and USB cable to PC and nothing happens its completley off. The phone is in perfect cosmetic condition, nothing is broken atleast on the outside. Anyone know what can possibly be broken on the inside or maybe the usb port on the phone.