A hardware processor of an image forming apparatus is able to obtain saving target information from a time of a power-off operation to a time of power supply interruption and to save the saving target information, in a nonvolatile storage of the image forming apparatus, as first snapshot data (for restoring a state at a predetermined time after firmware is activated). When a power-on operation is performed after the time of the power-off operation, the hardware processor determines whether to perform a first high-speed startup process using the first snapshot data as an apparatus startup process with respect to the image forming apparatus. When a determination is made to perform the first high-speed startup process, the hardware processor causes the display of the image forming apparatus to display, in a period in which a hardware initialization process in response to the power-on operation is being performed or immediately after the hardware initialization process is completed, an advance notice screen to be displayed before completion of startup in response to the power-on operation, the advance notice screen giving an advance notice that a transition to a user operable state following the power-on operation will be completed.