While I was on vacation, I had my USB charger hooked up from my work laptop to my cell phone to charge my cell phone battery. Well, my wife shut the computer off while I was sleeping. I forgot to remove the phone from the USB cord. Now, my cell phone won't charge using the special USB cord I have for it. I've tried different USB ports and computers. Usually, when it is hooked up, the phone will beep and a charging icon shows up on the phone. Now, nothing. It's a Samsung SGH A-517. Anyway I can verify if the USB cord is bad or the cell phone battery shorted out?