Information processing apparatus and control method

A method for controlling an information processing apparatus including a plurality of components, and including a power circuit unit capable of switching between supplying and stopping operating power to the plurality of components;

• a first component of the plurality of components, the first component being related to external power supply, and being supplied with operating power directly from the power circuit unit;
• a second component of the plurality of components, the second component being not related to the external power supply;
• a switch unit connected between the power circuit unit and the second component, the switch unit being capable of switching between supplying and stopping the operating power supplied from the power circuit unit to the second component;
• and a sub-controller that is operable with power supply to a main controller stopped, the main controller executing information processing based on an operating system (OS),
• the sub-controller using a first control signal to execute control of switching between supplying and stopping the operating power supplied from the power circuit unit, and using a second control signal to execute control of switching between supplying and stopping of the operating power via the switch unit.