Cleaning a laptop is not cosmetic maintenance. In Kigali, where dust accumulates in cooling vents faster than in most climates, a proper clean every few months is the difference between a laptop that stays fast and one that gets mysteriously slower every year.
This guide covers the full routine — safely, with things you can buy locally, and with a clear line between what you should do yourself and what belongs in a workshop.
What You Need
Essential:
- A microfibre cloth (two is better) — not tissue, not paper towel, not a shirt
- Isopropyl alcohol, 70% — available at pharmacies in Kigali
- A small soft brush — a clean, soft paintbrush works well
- Compressed air, or a manual air blower
Never use:
- Window cleaner, bleach, or any ammonia-based cleaner — these strip screen coatings permanently
- Paper towel or tissue — abrasive enough to scratch screen coatings over time
- Water applied directly to any surface
- A vacuum cleaner on internal components — the static risk is real
Before You Start
Shut the laptop down completely. Not sleep — full shutdown.
Unplug the charger and any accessories.
Remove the battery if it is removable. Most modern business laptops have internal batteries, so skip this if yours does not come out easily. Never force it.
Work somewhere with good light so you can see what you are actually doing.
Step 1: The Screen
The most easily damaged surface on the machine, and the one people most often clean wrongly.
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Dry first. Wipe gently with a dry microfibre cloth in one direction — not circles. This removes dust that would otherwise be dragged across the screen.
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Damp second, if needed. Lightly dampen the cloth with 70% isopropyl alcohol. Spray or pour onto the cloth, never onto the screen — liquid running down into the bezel is a common and expensive mistake.
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Wipe gently. No pressure. Pressing hard on an LCD can cause permanent discolouration.
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Dry immediately with the second cloth.
On a touchscreen: the same routine applies, but be extra careful with the amount of liquid, and check the edges are dry before closing the lid.
Step 2: The Keyboard
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Turn the laptop upside down and shake gently over a bin. You will be surprised what comes out.
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Blow between the keys with compressed air, holding the can upright and moving in short bursts across the keyboard. If using a can, keep it upright — tilting can spray propellant liquid.
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Brush the gaps with the soft brush to lift what the air did not.
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Wipe the key surfaces with a barely-damp microfibre cloth and isopropyl alcohol.
Do not remove keycaps on a laptop keyboard unless you know the specific mechanism. Laptop key retainers are fragile and easy to break, and replacing a single key is often harder than replacing the whole keyboard.
Step 3: The Chassis, Ports and Trackpad
Chassis and palm rest: a damp microfibre cloth with isopropyl alcohol. The palm rest accumulates skin oils and is usually the dirtiest part of the machine.
Trackpad: same, and clean it more often than you think — a dirty trackpad tracks noticeably worse.
Ports: compressed air only. Never insert anything metal into a port, and never use liquid. Dust in a USB-C or charging port causes intermittent connection faults that are frustrating to diagnose.
Vents on the outside: brush and compressed air. This is the important one — see the next step.
Step 4: The Cooling Vents — The One That Matters Most
This is the step that actually restores lost performance.
Dust builds up on the cooling fins inside the machine, insulating them. The laptop can no longer shed heat, so the processor throttles itself to avoid damage. The result is a laptop that gets slower every year with no other explanation.
What you can safely do yourself
Locate the vents — usually a grille on the underside and one on the side or rear hinge area.
Hold the fan still. This matters. Blowing compressed air into a vent spins the fan far beyond its design speed, which can damage the bearing or generate voltage back into the board. If you can see the fan blades, hold them gently with a toothpick or brush handle while you blow.
Use short bursts at an angle, aiming to push dust out of the vent rather than deeper in.
Do this every three months in Kigali, and more often during the dry season.
What belongs in a workshop
If the laptop is still running hot after an external clean, the dust is on the internal heatsink fins where surface air cannot reach — and if the machine is three years or older, the thermal paste between the processor and heatsink has likely dried out.
Both require opening the laptop. A proper internal clean and repaste typically returns a throttling laptop to full performance, and it is inexpensive relative to the alternative.
Do not open the machine yourself unless you know what you are doing. Business laptops are more serviceable than most, but there are ribbon cables that are easy to damage and screws of several different lengths. If your machine is under warranty, opening it may void that warranty.
How Often
| Task | Frequency in Rwanda |
|---|---|
| Screen and keyboard wipe | Weekly |
| Compressed air over keyboard and vents | Monthly |
| Thorough external clean, all surfaces | Every 3 months |
| Internal clean and thermal repaste | Every 12–18 months, workshop |
Kigali's dry season is harder on laptops than the wet season. If you work near an open window, on a construction site, or anywhere dusty, move to the more frequent end of every row.
Preventing the Dust in the First Place
Cleaning treats the symptom. These reduce the cause:
Never use it on a bed, sofa or carpet. Soft surfaces both block the vents and are themselves a dust source. This is the single most damaging habit. More common mistakes.
Use a laptop stand. Raising the machine improves airflow underneath and keeps it away from desk dust. Around RWF 20,000 and it also fixes your posture.
Keep it in a sleeve when not in use rather than open on a desk collecting dust.
Close the lid when you walk away.
Stands and accessories that keep airflow clear
| Model | Price (RWF) | Availability |
|---|---|---|
| HP M10 Wired Mouse | RWF 8,000RWF 5,000 | In stock |
| Universal Phone Rubber Holder | RWF 7,000 | In stock |
| Mouse pad | RWF 20,000RWF 9,900 | In stock |
| HP Blue-Pin Cable | RWF 20,000RWF 13,000 | In stock |
| HP W10 Rechargeable Wireless Mouse | RWF 13,000 | Low stock (1) |
5 models · prices pulled live from the PrimeTech catalogue and refreshed automatically — no manual updates, so what you see here is what you pay.
Signs You Have Left It Too Long
- The fan is loud and constant even during light use
- The base is uncomfortably hot to touch
- Fast for ten minutes, then progressively slower
- It shuts down unexpectedly under load
All four are thermal throttling. Full diagnostic guide.
Related Reading
- Caring for Your Laptop in Kigali's Dust & Heat
- Common Laptop Mistakes That Shorten Its Life
- Why Is My Laptop So Slow?
- How to Extend Laptop Battery Life
Need an Internal Clean?
If your laptop is running hot after an external clean, it needs opening properly. Get in touch — an internal clean and repaste is inexpensive and often restores a machine people had written off.
