Operating speed control of a processor at the time of authentication before an operating system is started

A start-up control method comprising:

• determining, by using a processor, when a basic input/output system (BIOS) is booted, whether registered authentication information exists in an information processing apparatus, in response to power-on of the information processing apparatus;
• executing, by using the processor, authentication processing of comparing input authentication information with the registered authentication information and determining whether the input authentication information matches the registered authentication information, when the registered authentication information exists in the information processing apparatus;
• booting, by using the processor, an operating system in response to confirmation of a match between the input authentication information and the registered authentication information by the authentication processing;
• decreasing an operating speed of the processor from a first operating speed to a second operating speed slower than the first operating speed in response to the determination that the registered authentication information exists in the information processing apparatus;
• and
• increasing the operating speed of the processor to the first operating speed in response to the confirmation of the match between the input authentication information and the registered authentication information by the authentication processing before the operating system is booted.

A computer-readable, non-transitory storage medium configured to store a computer program which is executable by a computer, the computer program controlling the computer to execute functions of:

• determining when a basic input/output system (BIOS) is booted, whether registered authentication information exists in the computer, in response to power-on of the computer;
• executing authentication processing of comparing input authentication information with the registered authentication information and determining whether the input authentication information matches the registered authentication information, when the registered authentication information exists in the computer;
• booting an operating system in response to confirmation of a match between the input authentication information and the registered authentication information by the authentication processing;
• decreasing an operating speed of a processor in the computer from a first operating speed to a second operating speed slower than the first operating speed in response to the determination that the registered authentication information exists in the computer;
• and
• increasing the operating speed of the processor to the first operating speed in response to the confirmation of the match between the input authentication information and the registered authentication information by the authentication processing before the operating system is booted.