1 First, we need to remove the chassis side panel. Most of the screws on the side plate of the chassis are two screws on the back of the main machine, and of course there are four screws on the side plate of the chassis. Let's get rid of it according to our own situation.

2. Then find a screwdriver to unscrew the screws of the main casing. Be careful to keep the removed screws.

After removing the two screws, we can remove the side plates of the chassis, some of which are locked. We need to retreat the side plate outward first, and we need to remove the chassis plate with some force, as shown below.

4. If a friend who has some experience in computer assembly can remove all the hardware and clean it, it will be cleaner. Let's look at the dust inside the computer host first. All the hardware, including the chassis, is covered with dust, as shown in the figure below.