Clean your laptop and replace thermal paste: a complete guide for beginners and advanced users

Does your laptop start to get hot, make noise and slow down over time? The reason most often lies in two things: the accumulation of dust inside the case and dried thermal paste. Even if you are not technically savvy, you can clean and replace it yourself - the main thing is to act carefully and according to the instructions.

In this article you will find step-by-step algorithm with photos, list of necessary tools and practical advicethat will help you avoid common mistakes. We will look at how to properly disassemble a laptop (using the example of popular models ASUS, Lenovo, HP, Acer), what is the difference between thermal paste for a processor and a video card, and what to do if the temperature does not drop after cleaning. And also - unique data on how often thermal paste actually needs to be changed depending on operating conditions.

Signs that your laptop needs cleaning and replacing thermal paste

First signal - elevated temperature. If at idle (without load) the processor warms up to 60–70°C, and under load - to 90°C or higher, this is a reason to worry. Normal values ​​for most models: 35–50°C at idle and 70–85°C under load (depending on the CPU model). You can check the temperature using programs AIDA64, HWMonitor or Core Temp.

Other symptoms:

• 🔊 Loud operation of the cooler (fan) even during minimal tasks - for example, when watching a video or working in a text editor.
• 🐢 A noticeable drop in performance: the laptop slows down, programs take a long time to open, games begin to lag.
• 🔥 Spontaneous shutdowns or reboots under high load (for example, in games or when rendering videos).
• 💻 The case is hot in the keyboard area or below - sometimes so much that it is impossible to hold your hands.

If you observe at least 2-3 symptoms from the list, there is a 90% chance that the problem is dust or thermal paste. But before disassembling the laptop, check two more points:

1. Make sure cooler is not blocked — sometimes dust accumulates so densely that the fan blades stop rotating.
2. Update video card drivers and BIOS — sometimes software errors cause overheating.

Preparation: tools and materials

To clean and replace thermal paste you will need:

Tool/material	Purpose	Where to buy	Cost (approx.)
Phillips screwdriver (PH0, PH00)	To unscrew the housing screws	Any tool store	100–300 ₽
Plastic paddles (pickers)	For neat release of plastic latches	AliExpress, electronics stores	50–150 ₽
Thermal paste (eg. Arctic MX-6, Noctua NT-H2, Thermal Grizzly Kryonaut)	To replace the dried layer	DNS, Citylink, Ozon	300–1000 ₽
Can of compressed air	For blowing dust out of hard-to-reach places	Computer stores	200–400 ₽
Cotton swabs and lint-free wipes	For cleaning the heatsink and processor	Pharmacy, hardware store	50–100 ₽

Also useful thermal pad (if your laptop uses it instead of paste for video card chips) and isopropyl alcohol (90% and above) for degreasing surfaces. Do not use regular medical alcohol - it leaves a film!

⚠️ Attention: If you have a laptop with soldered memory (For example, MacBook Pro or some models Dell XPS), disassembly may void the warranty. Check this in advance on the manufacturer's website.

Turn off the laptop and disconnect the charger|

Remove the battery (if possible)|

Take a photo of the location of the screws and connectors|

Prepare your workplace (clean table, good lighting)|

Wear an antistatic wrist strap (or at least touch a grounded object) -->

Step-by-step instructions: how to disassemble a laptop

The disassembly process depends on the model, but the general scheme looks like this:

1. Turn off the power and remove the battery (if it is removable). Some laptops (eg. MacBook Air or HP Spectre) the battery is soldered in - in this case, simply disconnect the cable from the motherboard after opening the case.
2. Unscrew all screws on the bottom cover. Please note: they may vary in length! Place them in separate containers or stick them on tape with your signatures.
3. Carefully pry off the lid with a plastic spatula, starting from the corner. Many laptops (eg. Lenovo ThinkPad or ASUS ROG) have hidden latches - do not use force to avoid breaking them.
4. Disconnect the cables (if they interfere with access to the cooling system). They are usually secured with small latches that need to be carefully lifted.

After removing the cover, you will see the cooling system: radiator, cooler and heat pipes. In some models (for example, Acer Predator or MSI Gaming) there may be two fans - for the processor and video card.

How to take apart a MacBook (2015–2020 models)

For a MacBook, disassembly is more difficult due to the use of special screws (Pentalobe P5) and adhesive for the battery. You will need:

1. Pentalobe P5 screwdriver.

2. Suction cup for removing the display (in models with Retina).

3. Plastic mediator for separating the battery.

4. Hair dryer or heating station (to soften the glue).

We recommend watching a video guide specifically for your model before starting work.

If you're not sure how to disassemble your particular model, look for a disassembly video on YouTube (for example, search for "disassembly [your model] disassembly"). This will help avoid mistakes.

Cleaning your laptop from dust: a step-by-step process

Once the case is open, we begin cleaning. Start with cooler:

1. Secure the fan blades (you can gently pinch them with your finger or insert a thin screwdriver between the blades) to prevent them from rotating.
2. Blow out the cooler with compressed air in short bursts (do not hold the can too close - this may damage the bearing).
3. If dust does not blow out, remove the fan (usually it is held in place by 2-4 screws) and clean it with a cotton swab soaked in isopropyl alcohol.

Next, clean radiator:

• 🧹 Remove large accumulations of dust between the radiator fins with compressed air. Hold the can at a 45° angle.
• 🔍 For hard-to-reach places, use cotton swabs soaked in alcohol. Do not press too hard - the radiator fins are thin and may bend.
• 🚫 Do not use a vacuum cleaner! It creates static electricity, which can damage components.

Pay special attention heat pipes - they must be clean, without traces of oxidation. If the tubes are blackened or covered with a green coating, this is a sign corrosion - in this case, it may be necessary to replace the cooling system.

⚠️ Attention: If you notice that the thermal paste on the processor or video card chip completely dried out and crumbled, this means that it has not been changed for years. In this case, before applying a new paste, be sure to degrease the surface with alcohol - the remains of the old paste will impair thermal conductivity.

Replacing thermal paste: how to do it correctly

Thermal paste is heat-conducting composition, which fills microscopic irregularities between the processor and the heatsink. Over time, it dries out and loses its properties, which leads to overheating. Here's how to replace it:

1. Remove the radiator. It is usually secured with 4-6 screws (sometimes with springs). Unscrew them diagonallyto avoid skew.
2. Remove old paste. Use a lint-free cloth soaked in isopropyl alcohol. For dried residue, you can gently scrape it with a plastic card.
3. Apply new paste. Optimal layer - pea-sized dot (3–5 mm in diameter) in the center of the processor. With radiator pressure it will be evenly distributed.
4. Put it all back together. Tighten the radiator screws gradually and diagonallyto avoid skew.

For laptops with discrete video card (For example, NVIDIA GTX/RTX or AMD Radeon) Thermal paste must also be applied to the GPU. There is a nuance here: some chips (for example, in GTX 1060 Mobile) have thermal pads instead of paste - they also need to be replaced if they have hardened.

Thermal paste type	Thermal conductivity (W/mK)	Service life	What tasks is it suitable for?
Arctic MX-6	6.0	6–8 years	Universal, for most laptops
Noctua NT-H2	8.5	5–7 years	For gaming laptops and high loads
Thermal Grizzly Kryonaut	12.5	2–3 years	For extreme overclocking (requires frequent replacement)
KPT-8	0.7–1.0	1–2 years	Budget option, not recommended for modern CPUs

A critical mistake many beginners make: applying too thick a layer of thermal paste. This leads to the opposite effect - deterioration of thermal conductivity due to the formation of air bubbles. The optimal layer thickness after compression by the radiator is 0.05–0.1 mm.

1. The tightness of the radiator (perhaps the screws are not tightened evenly).

2. The condition of the thermal pads on the video card memory chips (they could have dried out).

3. Cooler operation (perhaps it does not rotate at full speed due to dust in the bearing).-->

Assembling the laptop and checking the result

When all procedures are completed, reassemble the laptop in reverse order:

1. Connect all cables and connectors.
2. Replace the cover, carefully snapping all the latches into place.
3. Tighten the screws (do not overtighten!).
4. Connect the battery (if removed) and charger.

After assembly:

• 🔧 Turn on your laptop and check that it boots normally.
• 🌡️ Run a stress test (for example, in AIDA64 or Prime95) and track the temperature.
• 🔊 Listen to the operation of the cooler - it should rotate smoothly, without squeaks.

If the temperature drops by 10–20°C, you did everything right! If there is no change, possible reasons:

• 🔴 Thermal paste was applied incorrectly (too much or too little).
• 🔴 The heatsink does not fit tightly to the processor.
• 🔴 Thermal pads on the video card chips have dried out (need to be replaced).
• 🔴 The cooler is faulty (needs replacement).

⚠️ Attention: If the laptop does not turn on after assembly, check:

1. Connecting the power cable to the motherboard.
2. Correct installation of RAM (if removed).
3. Presence of a short circuit (for example, if you forgot to remove the foil from the thermal pad).

How often should you clean your laptop and change thermal paste?

The frequency of cleaning depends on the operating conditions:

Terms of Use	Cleaning from dust	Replacing thermal paste
Home use (clean room)	Once every 2–3 years	Once every 3–5 years
Gaming laptop (high load)	Once a year	Once every 2–3 years
Laptop for work (office, study)	Once every 3 years	Once every 4–5 years
Operation in a dusty environment (e.g. workshop)	Once every 6–12 months	Once every 2 years

If you are using liquid metal thermal paste (For example, Thermal Grizzly Conductonaut), it needs to be changed every 1–2 years, as it oxidizes over time. But this paste gives the best results for extreme cooling (for example, in overclocked Intel Core i9 or AMD Ryzen 9).

Remember: even if the laptop does not heat up, preventative cleaning Extends the life of components. Dust not only impairs cooling, but can also cause short circuit on the board.

FAQ: answers to frequently asked questions

Is it possible to clean a laptop with a vacuum cleaner?

No! A vacuum cleaner creates static electricity, which can damage microchips. In addition, it can suck in small parts (for example, screws). Use only compressed air or a soft brush.

What to do if after cleaning the laptop begins to heat up more?

Probable reasons:

1. Thermal paste was applied incorrectly (too thick or thin).
2. The heatsink does not fit tightly to the processor (check the screws).
3. The cooler is not connected correctly or does not rotate.
4. The thermal pads on the video card chips are dry (need to be replaced).

Disassemble the laptop again and check all the points.

Do I need to change the thermal paste in a new laptop?

In most cases no. Manufacturers apply high-quality paste, which lasts for 2-3 years. The exception is gaming laptops (for example, ASUS ROG or MSI Raider), where factory paste is often of poor quality. In such models, replacement can be done immediately after purchase to improve cooling.

Is it possible to use thermal paste from a processor for a video card?

Yes, but there is a nuance: video cards (especially in laptops) are often used for thermal pads instead of paste, since the gap between the chip and the heatsink is larger. If your model has paste, you can use the same one as for the CPU.

How much does it cost to have your laptop professionally cleaned?

Prices vary depending on region and complexity:

• 💸 Simple dust cleaning: 1000–2000 ₽.
• 💸 Cleaning + replacement of thermal paste: 2000–4000 ₽.
• 💸 Cleaning + replacement of thermal pads: 3000–5000 ₽.

For comparison: independent replacement will cost 300–1000 ₽ (the cost of thermal paste and tools).