System, medium, and control method for a computer

A method of controlling a computer comprising a CPU and a cooling fan, the method comprising:

• sensing a temperature within the CPU;
• monitoring for a selecting of one of a fan off mode, turning off the cooling fan, and a fan on mode, driving the cooling fan on;
• driving the cooling fan in accordance with the selected mode;
• providing a BIOS of the computer with information of the selected mode, such that the BIOS controls a clock frequency of the CPU based on the sensed temperature within the CPU if the fan on mode is selected, and the BIOS allows the OS to selectively control the clock frequency of the CPU if the fan off mode is selected,
• wherein if, under the fan off mode, a predetermined driving condition, previously requiring a particular control of the clock frequency of the CPU, is detected, the method of controlling the computer further comprises selectively controlling the clock frequency of the CPU based on the sensed temperature without regard to the predetermined driving condition.

A computer system, comprising:

• a processing unit;
• a cooling fan;
• a temperature sensor sensing a temperature of the computer system;
• a mode selector to select one of a fan off mode, turning off the cooling fan, and a fan on mode, turning on the cooling fan,
• wherein the cooling fan is controlled to turn on and off based on the selected mode, with a clock frequency of the processing unit being selectively controlled based on a sensing result of the temperature sensor when the mode is the fan on mode, and
• wherein if, under the fan off mode, a predetermined driving condition, previously requiring a particular control of the clock frequency of the processing unit, is detected, the computer system selectively controls the clock frequency of the processing unit based on the sensing result of the temperature sensor without regard to the predetermined driving condition.

A computer system control method, comprising:

• sensing a temperature of a computer system;
• monitoring a mode selector for selecting one of a fan off mode, turning off a cooling fan of the computer system, and a fan on mode, turning on the cooling fan,
• turning the cooling fan on and off based on a monitored selected mode of the mode selector, with a clock frequency of a processing unit of the computer system being selectively controlled based on the sensed temperature when the mode is the fan on mode, and
• wherein if, under the fan off mode, a predetermined driving condition, previously requiring a particular control of the clock frequency of the processing unit, is detected, the computer system control method further comprises selectively controlling the clock frequency of the processing unit based on the sensed temperature without regard to the predetermined driving condition.