A method for performing a quick boot and a general boot at a basic input output system (BIOS) stage is described. A computer is powered on. An embedded controller firmware or a BIOS determines whether a quick boot key is pressed. If the quick boot key is not pressed, a boot flag is changed from Quick Boot to General Boot. If the quick boot key is pressed, the BIOS determines whether the boot flag is set to Quick Boot. If it is determined that the boot flag is set to Quick Boot, an initialization of drivers preset by the quick boot is performed, and uninitialized drivers are initialized at a stage when an operating system is started. If it is determined that the boot flag is set to General Boot, an initialization of all drivers is performed.