A typical information technology (IT) system takes around 40% of the total energy used in cooling the system. There are three major classifications of cooling systems and they are water cooling, closed-loop liquid cooling, and immersion cooling systems. Immersion cooling has been observed to be the latest trend in cooling systems for IT devices. It is a cooling procedure that is carried out through the immersion of all computer components in a dielectric coolant. This research examined the cooling process of the circuit board using this immersion method. Mineral oil, because of its high dielectric strength, is used as a medium fluid. Observing voltage drop due to heat produced by circuit and effects of voltage drop in performance of circuit board. A concept idea and design for implementing immersion cooling to laptops.