Patent ID: 7178016

Claim:
A computer system having a power supply to supply electric power, the computer system comprising: a power controller to control the power supply to supply the electric power to the computer system; a clock module, having predetermined set limits, to output a control signal to the power controller so that the power supply supplies the electric power to the computer system on a booting set time; a booting compensator to allow the computer system to continue being booted in response to a booting start time being equal to a comparative set time which is previously stored, and to compensate the booting set time so that it corresponds with the comparative set time, and to stop the booting of the computer system, in response to the booting start time being different from the comparative set time; and a booting setting part to receive a user set time from a user; wherein the booting setting part stores the user set time as the booting set time in the clock module, and as the comparative set time in the booting compensator, in response to the user set time being within the set limits, and stores the user set time as the comparative set time in the booting compensator, and a wakeup time within the set limits as the booting set time in the clock module, in response to the user set time being beyond the set limits.