Installing a CPU fan correctly is important for keeping your computer cool and quiet. Learn how to install a CPU fan in a few quick steps. Before installing a CPU fan and heatsink, you’ll first have to determine whether you need to apply thermal paste to the CPU. If you’re installing a stock cooler than has been used before or an aftermarket heat sink fan, then it’s a must to apply thermal compound to the CPU before proceeding.
To install a CPU fan and heat sink, you will need to align the four push pins of the heat sink (circled in yellow above) with the four pin holes on the motherboard circled in motherboard:
Once everything is aligned, place your thumbs on the two diagonally opposite push pins and press down on both pins at the same time until you hear a “click” sound. See fan arrows.
Once you have pushed down all four pins, take a look at the bottom of the motherboard. If you have installed the CPU cooler correctly, the pins should protrude fully as shown in back of mb.
Now we are down to the final step of installing a CPU fan: Plug the CPU fan power connector into the 4-pin CPU fan header on the motherboard. On most motherboards, this header will be located near the CPU socket.