Please see the attached image from page 28 in the user manual. You will need a dupont wire in order to reset the HEXA to factory settings.
There are also two other scenarios for why the HEXA is not booting up. the HEXA could be broken and will need to be repaired at our facility in the US or in China. Also if you just received the HEXA and the HEXA doesn’t work, we may had disabled the HEXA because the HEXA was stolen. If you think that there is a possibility that HEXA was stolen, we can check the HEXA by it’s serial number to confirm. Please let me know how this works out!