Quick fix. Pop off the back, unscrew and disconect the batery. Ignore all the leads and find one of the pads that says "-P" and there should be another unlabeled pad in the middle at the top of the connector by it self. This is the positive connections. Use a power supply set around 5 volts and line the leads up to the pads and wait until the current of your power supply reaches around 1 amp, and then hook it all back up and it should have enough to boot and recognize your charger. @oldturkey03 has some really helpful information as well, i recommend trying his steps before attempting to jump of the battery manually. But jumping it off was what I had to do in the long run.