Disclosed are a computer including a basic input output system (BIOS) memory in which a BIOS for testing and controlling each component of the computer system at the time when power is supplied to the system and a control method thereof. The computer includes an sound command signal unit provided in the BIOS memory, generating a sound command signal according to a system state of the computer, a booting sound memory in which sound data is stored, and a booting sound controller for outputting the sound data in the booting sound memory to a speaker according to the sound command signal. Accordingly, even though a sound drive is not installed in the system, the computer can output a sound and a message in order to indicate the state of the computer, such as an initial booting, termination of a system and release of a power saving mode.