If the battery is completely depleted, power will not be supplied to the button and you may not be able to turn on the Reader. In this case, the Charge/Busy indicator may blink red 3 times. Connect the Reader to your computer via the supplied USB cable, the Reader will automatically turn on approximately 5 minutes later. Wait until the Reader turns on before trying to operate it.
Moisture condensation may have occurred. Wait for a few hours and then turn on the Reader.