A major problems in the operation of laptop computers is overheating since it can affect the performance and stability, sometimes leading to system crash and hardware fatality. The objective of this work was to study the thermal behavior inside a laptop computer and to test the effectiveness of aproposed cooling method to overcome overheating problem. The proposed cooling system contained a thermoelectric device that reduced the intake air temperature into the laptop internal cooling system. An external exhaust blower, located at the exhaust air outlet of the laptop, was mounted to ensure sufficient air flow rate delivered by the cooling system. To assess the effectiveness of the system, temperatures of critical components in the computer were measured. It was found from the study that, under extreme utilization situation, the temperature of the graphic processing unit could increase to 99°C. The proposed cooling system could bring down the temperature by up to 6°C.