A booting system includes a control module, a voltage regulation module, a complex programmable logic device (CPLD), and a power supply unit (PSU). The control module is configured to output a booting signal. The CPLD is coupled to the control module for receiving the booting signal and is configured to sense status of the voltage regulation module, a power control signal is outputted from the CPLD when the CPLD receives the booting signal and status of the voltage regulation module are normal. The PSU is coupled to the CPLD for receiving the power control signal from the CPLD and outputs a power signal for booting up a computer.