L I can’t reboot the recorder with the Reset button. To restart the recorder, you need to turn it off, unplug the power cord from the recorder, and then press and hold the Reset button for at least 5 seconds. Also, make sure you press the Reset button. When you press it, you will hear the characteristic sound of the microphone contact. If the recorder does not reach normal operation, repeat this operation. If this does not help, please contact a service center.