You’ll need:

compressed air duster
rubbing alcohol
cotton swabs
ESD gloves
a screwdriver

Step 1. Turn off your computer. Put on ESD gloves to protect certain PC components from potential damage from electrostatic discharge. Power off the system unit by removing the power cable. Take a photo of where all cables and cords are located, and then disconnect them from the system unit. This photo will help you connect them correctly later. It’s also recommended that you take a photo of the correct position of the components and their mountings before removing them. Then remove screws with a screwdriver and take off the system unit cover.

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