How to Clean Dust Out of Your Laptop Yourself — A Step-by-Step Guide

Cleaning a laptop isn’t rocket science, but there are a few things that can go wrong. If you want to try it yourself, here’s an honest guide from our workshop experience — with warnings about when it’s actually worth calling a professional.

What you’ll need

• Phillips PH00 and PH0 screwdriver — for the small laptop screws (available at any hardware or electronics store).
• Thermal paste — Arctic MX-6 or Cooler Master MasterGel. Avoid the cheapest generics — they dry out within a couple of months.
• Isopropyl alcohol 90%+ — from a pharmacy. Don’t settle for 70% from the supermarket — it doesn’t clean well enough.
• Microfiber cloth — for removing the old paste.
• ESD wrist strap or touching a radiator before you start — to discharge static electricity from your body.
• Small zip-lock bags or a magnetic tray — so the screws don’t get away from you.

Before you start — check the warranty

Most laptops have “Warranty Void If Removed” stickers over the screws. If your laptop is new and still under warranty, cleaning it will void the warranty. Think it over — manufacturers often perform maintenance free of charge while under warranty.

Step 1: Preparation

1. Turn off the laptop and unplug the power cable.
2. If it has a removable battery — take it out. If it doesn’t (most newer models), skip this step for now.
3. Set up a clean, well-lit table. Ideally with a magnetic mat for the screws.
4. Touch a metal radiator pipe or a faucet — ground yourself. This matters; static electricity can kill components.

Step 2: Open the bottom cover

Separate the screws and keep them in groups — they’re often different lengths. Put them in separate bags or lay them out on a piece of paper where you mark their positions.

After the screws, the cover itself is usually held on by plastic clips. Use a plastic card (an old bank card) to gently pry along the edge. NEVER force it — if it creaks, there’s still a hidden screw somewhere (under a sticker or down a hole). Look carefully.

Step 3: Locate the fan and heatsink

You’ll see: the fan (a small “box” with blades), the copper heatsink (heat pipes and a radiator), and the CPU/GPU underneath the heatsink. All of it is probably covered in a thin layer of dust, with a “carpet” of dust around the fan.

Step 4: Removing the fan

This is where you pay attention. The fan has:

• 2–4 screws holding it in place — remove them
• A small cable running to the motherboard — carefully pull it out by the connector, NEVER pull on the cable

Once the fan is free, take it out.

Step 5: Removing the heatsink

The heatsink is fastened with 4–6 screws. Important: unscrew them in the order of the numbers engraved on it (1, 2, 3, 4) and do it A LITTLE AT A TIME (half a turn each, then move to the next). If you fully unscrew one screw while the others still hold, you’ll bend the heatsink and can damage the CPU.

Once all the screws are loose enough, gently lift the heatsink up. If it won’t come off, it means the thermal paste is so old it has glued itself down — gently “rock” it left and right until the contact breaks. Don’t force it.

Step 6: Cleaning

1. The fan: remove the big clumps of dust by hand (not with compressed air!). Wipe the blades with a microfiber cloth and a little isopropyl. Be careful not to bend the blades — they can end up warped.
2. The heatsink / radiator: the radiator’s fins are packed tightly together — use a soft brush or compressed air here. The goal is that no dust is left between the fins.
3. The CPU and GPU: the old thermal paste is probably dark gray and hard. With a microfiber cloth and isopropyl, work from the center outward, gently. Repeat two or three times until the metal top becomes shiny. Do the same for both the CPU and the GPU.

Step 7: Applying new thermal paste

There are a hundred theories about how to apply paste. After thousands of replacements, here’s our practice: a drop the size of a corn kernel in the center. The pressure of the heatsink will spread the paste on its own. DON’T do a “full coat” or spread it with a card — that’s too much, and the paste will leak off the CPU onto neighboring components.

Step 8: Reassembly

Reassembly is the reverse order. Important:

1. Press the heatsink down evenly, tighten the screws crosswise (1, 3, 2, 4) and by half a turn at a time until it seats
2. Reconnect the fan connector before you put the cover back on (it’s easier to see)
3. The cover clips — press them in finger by finger, they should click into place
4. Put the screws back in the same hole you took them from (don’t mix them up!)

Testing after cleaning

Download HWMonitor (it’s free). Turn on the laptop and run something a bit demanding (YouTube 1080p, a few tabs). Watch the CPU temperatures:

• 30–50°C at idle — excellent
• 60–75°C under load — normal
• 80–90°C under load — still fine, but close to the limit
• 90+°C — something’s wrong, most likely the heatsink didn’t seat properly. Open it up and check the contact.

When NOT to do it yourself

• MacBook — Apple uses special screws and adhesive. It’s nearly impossible without the specific tools.
• Gaming laptops (Razer Blade, MSI, ROG) — they often have a complex cooling system with thermal pads that have to be replaced, not just the paste.
• Ultra-thin ultrabooks (Dell XPS 13, ASUS ZenBook 14) — everything is packed in so tightly that the risk of breaking a connector or bending the board is high.
• If your laptop won’t turn on after reassembly — don’t force it. Bring it in, we’ll take a look free of charge.

If you don’t feel confident, a visit to our shop takes about an hour, with a guarantee that it works afterward (prices in the price list). But cleaning it yourself is a great introduction to working with electronics — it gives you an understanding of how your laptop functions. The next time something breaks, you’ll know what to ask.

Need a laptop while yours is being repaired? While we fix the problem, you can rent a replacement laptop — by the day, week, or month, with delivery anywhere in Serbia or pickup at the shop.

Not managing it on your own? We’ll do a laptop dust cleaning with a thermal paste replacement, and if the hinges have loosened too — hinge repair.