When image data which does not satisfy set conditions is input from a device which outputs image data, a display apparatus prevents a distortion of display. The display device includes a display unit that displays an image based on image data input from the PC, a connection control unit that executes connection control of setting transmission conditions including transmission line capacity of the image data to be output from the PC by transmitting and receiving control information to and from the PC, an input data determination unit that determines whether or not the image data to be input from the PC satisfies the transmission conditions, after the connection control, and a display control unit that sets a display state with the display unit as a predetermined display state, when it is determined that the image data to be input from the PC does not satisfy the transmission conditions.