Just like any other computer component, CPU fans wear out over time. Whereas it may be possible to operate a computer without a CD-ROM drive or sound card, processors need a fan to avoid overheating. Installing a new fan takes only a few minutes, but first you must take out the old one. Avoid unnecessary confusion and damage to your computer by learning how to remove a Cooler Master CPU fan the proper way.
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Turn off the computer and unplug all cables from the system, including network and peripheral cords. Lay the system right-side down so that the CPU fan is easier to access.
Pull away the left side panel to access the inside of the PC. Some systems require you to remove a screw with a Phillips screwdriver or press down a latch to slide off the side cover. Touch a bare metal portion of the case to discharge static electricity from your body.
Unplug the three-pin CPU fan from the white connector. You can find it near the middle of the motherboard next to the heat sink.
Remove the Cooler Master fan from the top of the heat sink. Twist out the four screws on each corner of the fan with a Phillips screwdriver to release it.