When I plug in the board, the MCU does not turn on. Only when I press the reset button does the D3 LCD start blinking. my computer then recognizes it as a device, pulls up the BOOTLOADER drive, but I can only access it for about 10 seconds until the computer does not recognize it as a device anymore. The D3 LCD continues blinking even though the MCU is not recognized by the computer. Does anyone know how I can fix this?