A display apparatus and a controlling method thereof are provided. The controlling method of a display apparatus according to an exemplary embodiment includes, in response to a power-off command being input, storing information regarding an application which is executed at the time when the power-off command is input and entering a standby mode, and in response to a user interaction being detected while the display apparatus maintains a standby mode, entering a pre-power on mode where power is applied to an element included in the display apparatus by performing kernel-level booting.