An electronic apparatus having a function to omit part of initialization processing that is performed at the time of cold boot by using information held in a volatile storage device in returning from a power-saving state where power consumption is suppressed includes: a determination unit configured to determine, based on information indicating a connection state of a specific module of all the modules, whether to suspend supply of power to all modules of the electronic apparatus or to make a transition into the power-saving state where supply of power to at least the volatile storage device is maintained in response to an operation to turn off a power source by a user; and a power source control unit configured to control supply of power to each module of the electronic apparatus in accordance with the determination, and in activation processing in accordance with the function, part of initialization processing of the specific module is omitted.