Check that the installation of the software has been successful. Also check the connection as follows:
When using an external USB hub, connect the IC recorder directly to the computer or use the supplied USB connection support cable.
Disconnect and then connect the IC recorder.
Connect the IC recorder to another USB port.
Your computer may be in the system standby/hibernate mode.
Do not let your computer enter into the system standby/hibernate mode while being connected to the IC recorder.
Save a backup copy of all of the data stored on the built-in memory or the microSD card, and then format the built-in memory or the microSD card using the formatting function in the menu.