Replacing thermal paste and thermal pads on a laptop: a complete guide from disassembly to testing

Laptop overheating is one of the most common problems that users encounter after 2-3 years of active use. Even top models from ASUS ROG, MSI or Lenovo Legion begin to “suffocate” under load if you do not pay attention to the cooling system. The main reason is drying of thermal paste and degradation of thermal pads, which lose thermal conductivity and cease to effectively remove heat from the processor and chipset.

In this article, we will look at how to replace thermal paste and thermal pads yourself without contacting a service center. You will learn what materials to choose for different laptop models (from budget Acer Aspire to gaming Alienware), how to properly disassemble the device, apply new compounds and check the result. And also - Let's reveal the myth about the “eternal” liquid metal paste and explain why it is not suitable for all laptops.

Signs that it's time to change thermal paste and thermal pads

How can you tell if your laptop's cooling system is not working efficiently? There are several key symptoms that indicate the need to replace thermal interfaces:

• 🔥 Constant overheating - CPU temperature under load exceeds 90–95°C (for Intel Core i7/i9 or AMD Ryzen 7/9 this is a critical indicator).
• 💻 Throttling (frequency reset) - the laptop suddenly “slows down” in games or when rendering, although it could handle the load before.
• 🔊 Cooler noise at maximum — fans operate at maximum speed even during simple tasks (for example, in Google Chrome with 5–6 tabs).
• 🛑 Unexpected shutdowns - the laptop turns off due to thermal protection (especially important for Dell XPS And HP Omen).
• 📉 Decreased performance — in benchmarks (for example, Cinebench R23) results drop by 15–20% compared to a new device.

If at least 2-3 items from the list are familiar to you, it means that thermal paste and thermal pads are no longer doing their job. But before you start disassembling, make sure that the problem is not a dusty cooling system. Sometimes it's enough clean cooler and radiator from dust so that the temperature drops to 10–15°C.

⚠️ Attention: On laptops with NVIDIA Optimus (hybrid graphics) overheating can be associated not only with the processor, but also with the discrete video card. In this case, the thermal pads on the GPU also require replacement.

Which thermal paste and thermal pads to choose for a laptop

The thermal interface market is huge, but not all compounds are suitable for laptops. Main selection criteria:

• 🧪 Thermal conductivity - for processors (Intel/AMD) optimal 10–12 W/mK, for video cards - 8–10 W/mK.
• ⏳ Durability - pastes based liquid metal serve 5–7 years, silicone ones - 2–3 years.
• 🔧 Compatibility — liquid metal pastes cannot be used with aluminum radiators (risk of corrosion).
• 💰 Price/quality — expensive pasta is not always better: for example, Arctic MX-6 (~1000₽) often exceeds Thermal Grizzly Kryonaut (~2500₽) in long-term tests.

The table below compares popular thermal pastes and thermal pads for different budgets:

Type	Model	Thermal conductivity	Pros	Cons	Price (for 1–2 g)
Thermal paste	Arctic MX-6	11 W/mK	Low price, non-conductive, durable	Requires running-in (1–2 weeks)	~1000₽
Thermal paste	Thermal Grizzly Kryonaut	12.5 W/mK	High thermal conductivity, suitable for extreme overclocking	Dries in 1.5–2 years, dear	~2500₽
Thermal paste	Coollaboratory Liquid Ultra	38 W/mK	Better thermal conductivity, does not dry out	Conducts current, requires careful application, incompatible with Al radiators	~3500₽
Thermal pads	Gelid Solutions GP-Ultra 12	12 W/mK	Soft, fills gaps well, durable	Dear ones, it’s difficult to cut without a template.	~1500₽ (sheet 100×100 mm)
Thermal pads	Arctic Thermal Pad	6 W/mK	Budget-friendly, easy to install	Low thermal conductivity, only suitable for minor chips	~500₽ (sheet 140×140 mm)

For most laptops the best choice is:

• 🖥️ Office/budget (Lenovo IdeaPad, HP Pavilion) — Arctic MX-6 + Arctic Thermal Pad.
• 🎮 Gaming (ASUS TUF, MSI GF63) — Thermal Grizzly Kryonaut + Gelid GP-Ultra 12.
• ⚡ Extreme (overclocking, Alienware Area-51m) — Coollaboratory Liquid Ultra (only if the radiator is made of copper!).

Preparing for replacement: tools and safety precautions

Before disassembling your laptop, prepare everything you need. Without the right tools, you risk damaging plastic latches, stripping screws, or even breaking cables.

Minimum set for replacing thermal interfaces:

• 🔧 Screwdrivers - cross (PH00) and flat (1.5–2 mm) for different screws.
• 🧲 Magnetic holder - so as not to lose small screws (there are up to 20-30 of them in laptops!).
• 🧴 Isopropyl alcohol (90%+) - for cleaning old paste.
• 🧻 Lint-free wipes or coffee filters - do not leave fibers.
• 📏 Plastic card or mediator - for carefully prying off the lid.
• 🔥 Hair dryer or hot air station - if the thermal pads are stuck.

⚠️ Attention: Do not use WD-40 or other solvents for cleaning the processor! They leave an oil film that impairs thermal conductivity. Isopropyl alcohol only!

Security measures:

• ⚡ Disconnect the laptop from the network and remove the battery (if it is removable).
• 🕰️ Work for antistatic mat or at least touch a grounded object before disassembling.
• 📸 Take photos of every step - this will help you put the laptop back together correctly.
• 🔄 Do not use force when unscrewing the screws - if “it doesn’t work”, check if there is a hidden screw left.

Unplugged the laptop from the outlet|

Removed the battery (if possible)|

Prepared all the tools|

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I checked the disassembly diagram for my model|-->

Step-by-step instructions: disassembling the laptop and replacing thermal interfaces

The disassembly process differs depending on the model, but the general scheme is the same. We will look at a universal algorithm using popular laptops as an example (Lenovo ThinkPad, ASUS ROG Strix, Acer Nitro 5).

Step 1: Removing the back cover

Most laptops have screws under rubber feet or stickers. Carefully pry them up and unscrew all the screws (usually 8–12 pieces). Then run a plastic card around the perimeter of the lid to release the clips. Do not use metal objects — they leave scratches!

Step 2. Disconnecting the cables and removing the cooler

After removing the cover you will see the cooling system. First, disconnect the cooler cable from the motherboard (usually it is connected to the connector FAN1 or CPU_FAN). Then unscrew the screws securing the radiator (usually 4–6 pieces in a cross pattern). Do not remove the radiator abruptly - The thermal paste may “stick” and you will damage the processor.

Step 3: Cleaning Old Thermal Paste and Gaskets

Dampen a lint-free cloth with isopropyl alcohol and carefully remove old paste from the CPU, chipset, and GPU. For dried residues, use wooden stick (not metal!). Thermal pads are usually glued to the radiator - they can be removed with tweezers or heated with a hairdryer (temperature ~60°C).

Step 4: Apply New Thermal Paste

For processors (Intel/AMD) optimal method - drop in the center (the size of a pea). For GPU - a thin layer spread with a spatula. Don't apply too much - excess may leak onto the motherboard! Liquid metal paste (Coollaboratory) need to be distributed only with gloves - it's toxic.

Step 5: Install Thermal Pads

Cut the spacers to fit the chips (use the old ones as a template). The thickness must match the original (0.5–1.5 mm). When installing don't press too hard — the gaskets should lie flat, without distortions.

Step 6: Build and Test

Reassemble the laptop in reverse order, making sure that all cables are connected. After switching on, check the temperatures in HWMonitor or Core Temp. If the temperature under load does not drop, it means that an error was made somewhere (for example, The radiator is not pressed well or paste applied incorrectly).

Common mistakes when replacing thermal paste and how to avoid them

Even experienced users sometimes make mistakes that ruin all their efforts. Here are the most common mistakes and ways to prevent them:

• 🧴 Too much thermal paste - excess can flow under the chipset or onto capacitors, causing a short circuit. Solution: Apply a thin layer (as thick as a sheet of paper).
• 🔩 Uneven tightening of radiator screws - leads to distortion and poor fit. Solution: tighten the screws criss-cross in 2–3 approaches.
• 🔥 Using liquid metal paste on an aluminum radiator - Corrosion will begin in 1–2 years. Solution: check the radiator material (copper is ok, aluminum is not).
• ❄️ Forgot to clean the radiator from dust — even new paste won’t help if the heat sink is clogged. Solution: blow out the radiator with compressed air to replacement of paste.
• 📏 Incorrect size of thermal pads — too thick gaskets impair heat transfer. Solution: use a micrometer or caliper to measure.

Another common problem is damage to temperature sensors when cleaning. If after assembly the laptop does not turn on or shows obviously incorrect temperatures (-50°C or +200°C), most likely you have touched the sensor. In this case, only diagnostics at a service center will help.

⚠️ Attention: On some laptops (Apple MacBook Pro, Dell XPS 15) thermal sensors are soldered into the motherboard. Damage to them can lead to complete inoperability of the device!

Testing after replacement: how to check the result

Replacing thermal paste is only half the battle. The main thing is to make sure that the temperature has actually dropped and that the cooling system is working correctly. To do this, use a combination of programs and tests:

• 🌡️ Temperature monitoring — HWMonitor, Core Temp or AIDA64. Compare indicators in idle time And under load.
• 🎮 Stress tests:
  • Prime95 - to check the processor (Small FFTs mode).
  • FurMark - for testing the video card.
  • Cinebench R23 - to evaluate performance.
• 📊 Comparison with reference values - for Intel Core i7-12700H normal temperature under load - 75–85°C, for AMD Ryzen 9 5900HX — 80–90°C.

Example of a successful replacement:

Before replacing the thermal paste on a laptop ASUS ROG Zephyrus G14 (Ryzen 9 5900HS) warmed up to 98°C in Cyberpunk 2077. After application Thermal Grizzly Kryonaut and replacing thermal pads with Gelid GP-Ultra 12 the temperature dropped to 78–82°C, and FPS increased by 10–15% due to the lack of throttling.

If temperatures have not changed or even increased, check:

• 🔧 Correct assembly (are all the screws tightened, are there any distortions in the radiator).
• 🧴 Quality of thermal paste application (there may be air bubbles left).
• 💨 Cooler operation (suddenly it is not connected or clogged with dust).

💡

If, after replacing the thermal paste, the temperature at idle increased by 5–10°C, but dropped under load, this is normal. The new paste has better thermal conductivity, but requires a “break-in” period of 1–2 weeks.

When is the best time to contact a service center?

Not all laptops can be disassembled at home. In some cases, it is better to trust the professionals so as not to lose the warranty or damage the device.

Situations when amateur activity is dangerous:

• 🔧 Laptop under warranty - self-disassembly will void the warranty (exception - models with user-upgradeable components, for example Framework Laptop).
• 🔥 BGA chips — if you need to replace thermal pads on the chipset or memory (for example, in MacBook Pro), the risk of damaging the chips is too high.
• 💻 Ultrabooks with soldered memory (Dell XPS 13, HP Spectre) - their disassembly requires special tools and experience.
• ⚡ Eating problems - if the laptop does not turn on after your manipulations, do not try to fix it yourself (risk of short circuit).

The cost of replacing thermal paste in the service varies from 1500₽ to 5000₽ depending on the model. For comparison: replacing it yourself will cost 1000–3000₽ (price of paste + pads). If you are not confident in your abilities, it is better to overpay, but be confident in the result.

How long will new thermal paste last?

• 🧴 Silicone pastes (Arctic MX-6, Noctua NT-H2) — 2–3 years.
• 🔥 Liquid metal (Coollaboratory Liquid Ultra) — 5–7 years.
• 🧊 Thermal pads — 3–5 years (depending on the quality of the material).

What happens if you don't change the thermal paste at all?

Prolonged overheating leads to degradation of the processor chip, reduced battery life, and even the risk of fire (in extreme cases). For example, in Intel Core i9-12900HK at constant 100°C+ After 1–2 years, solder peeling may occur, which will lead to complete failure of the chip.

FAQ: answers to frequently asked questions

Can I use thermal paste from a computer for a laptop?

Yes, but not all pastes are suitable. For example, liquid metal (Coollaboratory, Thermal Grizzly Conductonaut) require caution - they conduct current and can damage the laptop if applied carelessly. For most laptops it is better to choose non-conductive pastes (Arctic MX-6, Noctua NT-H1).

How often should you change the thermal paste in your laptop?

Depends on intensity of use:

• 🖥️ Office laptops (Lenovo ThinkPad, HP EliteBook) - once every 3–4 years.
• 🎮 Gaming laptops (ASUS ROG, MSI Raider) - once every 1.5–2 years.
• ⚡ Overclocked laptops - annually.

If the laptop is used in a dusty room, the interval is reduced by 30%.

What is the difference between thermal pads and thermal paste?

Thermal pads are elastic sheets made of thermally conductive material, which are used to cool secondary chips (chipset, memory, VRM). Thermal paste - viscous substance, which is applied to the processor and video card. Gaskets are easier to install, but are inferior to paste in terms of thermal conductivity.

Can thermal paste be applied to thermal pads?

No! Thermal pads already have an adhesive layer, and additional paste will only worsen heat transfer. The exception is if the gasket thin (0.3–0.5 mm) and does not cover the chip completely. In this case, you can apply thin layer of paste on top of the gasket.

Why did my laptop start to get hotter after replacing the thermal paste?

Probable reasons:

• 🔧 The radiator is not pressed well — check that the screws are tightened evenly.
• 🧴 Too much pasta - Excess creates air bubbles.
• 💨 Cooler not connected — make sure that the cable is inserted into the connector.
• 🔥 Thermal sensor is damaged - diagnostics required.

Disassemble the laptop and repeat the procedure.