Hello & Welcome to Just Answer,
Sorry to hear of any trouble you may be having with your device.
May I ask:
1) The AGE of the device?
2) Does the device still operate properly when NOT connected to any power?
3) Do you have the USB cable that came with the device?
4) If you do have the USB cable, does the computer "see" the device when the cable is connected?
I see you have opened another question - which I have requested to be closed.
If you can, please reply in the box below (when you can) and we can continue here.
Thanks, ***** *****