An electronic apparatus is provided. The electronic apparatus includes a speaker configured to output sound, a communication interface configured to receive sound data from an external device, a sound processor configured to process the received sound data and to output the processed sound data to the speaker, a display configured to display a state of a connection with the external device, and a microcomputer controller configured to control the display to display the state of the connection with the external device when the electronic apparatus is in a non-booted state.