Ever since I've connected my phone to my computer to charge (old phone charger broke so I used my USB cord to charge it) it never charges anymore! I've tried using: my USB cord, my charger, the car charger and my dad's charger.. STILL NOTHING. My dad says he's going to try buying me a new charger, but before he does that I wanted to make sure that was the problem before he wasted money on something that won't fix my problem.

HELP!
-K.