Charging and turning on issues

Morning! I have just bought a Theta V and have been trying unsuccessfully to charge it and turn it on. When I plug it in (have tried my computer, an external battery and even a wall charger) the green light on the power button flashes green for about 15 seconds, then it makes a little beeping sound, the power button changes to blue and the little light above the capture button turns blue and the little camera icon below that button turns blue for just a second, then the lights all turn red, then the power button flashes green for a second or two again and then all the lights turn off. When I push the power button to turn it on the button and the little light above the capture button on the front light up red for a second and then go off. Nothing does anything apart from that sequence. I have tried it a dozen times and that is all I can get the thing to do.

PLEASE HELP!