Replacing thermal paste on a laptop: detailed instructions from A to Z

Laptop overheating is one of the most common problems that users encounter after 2-3 years of active use. Even powerful gaming models from ASUS ROG or MSI begin to “choke” the processor, and office Lenovo ThinkPad or Dell Latitude suddenly turn off under load. In 90% of cases, high temperature is to blame due to dried thermal paste - a special composition that removes heat from the chips to the radiator.

Replacing thermal paste seems like a simple procedure, but there are pitfalls here: from the wrong choice of composition to the risk of damaging fragile elements of the motherboard. This article will help you avoid mistakes. We'll figure it out what thermal paste to choose for different types of laptops, how to carefully disassemble the case, apply a new layer and check the result. We’ll also reveal the myths about “eternal” pastes and explain why Replacing thermal paste with liquid metal without preparation can kill a laptop in 24 hours.

Signs that it's time to change the thermal paste

A laptop does not always “scream” about cooling problems with obvious symptoms. Sometimes overheating is disguised as other faults. Here are the key signals that should not be ignored:

• 🔥 Random shutdowns when gaming, rendering or even watching videos in 4K - the protective mechanism is triggered during critical 100°C+.
• 💻 Loud fan operation at idle speed (for example, in Word or browser) is a sign that the cooling system is working at its limit.
• ⚡ CPU throttling: The laptop suddenly slows down, although the CPU load is in Task Manager not tall. Check the temperature in HWMonitor or Core Temp.
• 🔋 Rapid battery drain - when the laptop overheats, it consumes 20-30% more energy, trying to compensate for the loss of performance.

If you observe at least 2-3 items from the list, the probability of a problem with thermal paste is 85%. But before disassembling the laptop, rule out other reasons:

• 🧹 Radiator dustiness (cleaning helps in 60% of cases).
• 🔄 Cooler malfunction (check if the fan spins under load).
• 🖥️ Incorrect BIOS settings (for example, disabled Turbo Boost on Intel).

⚠️ Attention: On laptops with NVIDIA Optimus (For example, MSI GE76 or Acer Predator) overheating may be due to video memory malfunction. If after replacing the paste the GPU temperature remains higher 90°C, chip diagnostics are required.

Which thermal paste to choose: 2026 rating

The thermal interface market is flooded with offers - from cheap “no-name” pastes to professional compounds for overclockers. Main rule: don't skimp on thermal paste. A poor composition may not only fail to improve heat dissipation, but also damage board elements (for example, Arctic MX-4 compatible with aluminum, and Coollaboratory Liquid Ultra - no).

Paste type	Models (examples)	Thermal conductivity (W/mK)	Pros	Cons
Silicone	Arctic MX-6, Noctua NT-H2, Thermal Grizzly Kryonaut	11–14	Safe for aluminum, non-conductive, service life 5-8 years	Requires replacement every 3-5 years, afraid of high temperatures (>150°C)
Based on liquid metal	Thermal Grizzly Conductonaut, Coollaboratory Liquid Ultra	73–80	Best heat sink for extreme cooling (suitable for Intel Core i9/AMD Ryzen 9)	Conducts electricity, requires chip insulation, difficult to apply
Ceramic	Arctic Ceramique 2, Cooler Master MasterGel Maker	6–9	Cheap, non-conductive, suitable for budget laptops	Low thermal conductivity, dry quickly (1-2 years)
Graphite gaskets	Thermalright Odin, IC Graphite Pad	35–50	Do not require replacement for 10+ years, do not conduct current	0.5-1mm thickness may not be suitable for thin laptops

For most laptops, the best choice is Arctic MX-6 or Noctua NT-H2. They combine high thermal conductivity (11–12 W/mK) and safety. Liquid metal (Conductonaut) is worth taking only if you are ready:

• 🛠️ Isolate the chip Kapton (special tape).
• 🔧 Precisely apply a thick layer 0.1–0.3 mm (overdoing it threatens to cause a short circuit).
• 💰 Spend 5-10 times more on paste than on a silicone analogue.

Preparing for replacement: tools and safety precautions

Disassembling a laptop is not reassembling it IKEA wardrobe. Here every screw is important, and a mistake can be costly. Before you begin, prepare:

• ⚒️ Screwdriver set: cross PH00 (for most laptops), hexagon H1.5 (for Dell XPS), torx T5 (for MacBook).
• 🧴 Thermal paste (selected from the table above) + alcohol solution (90%+) for cleaning.
• 🧻 Lint-free wipes or coffee filters (plain paper leaves lint!).
• 📸 Smartphone for photographing the process (useful for reassembly).
• 🧲 Magnetic mat or a container for screws (so as not to lose small parts).

Protect yourself and your laptop:

• 🔌 Disconnect the battery (if it is removable) or work with the power supply disconnected. Even a discharged battery can produce a dangerous discharge when shorted out.
• 👔 Use an antistatic wrist strap or at least touch the metal case of the system unit every 5 minutes (static electricity discharge kills chips).
• 🚫 Don't smoke or drink next to a disassembled laptop - a drop of liquid on the motherboard = repair for 10 000+ ₽.

⚠️ Attention: Laptops Apple (especially models MacBook Pro 2018+) have glue batteries, which can ignite if removed carelessly. If you are not sure, it is better to contact the service.

Turned off the power and removed the battery (if possible)|

Prepared all the tools and thermal paste|

I photographed the location of the screws and cables|

Wear an antistatic wrist strap (or ground yourself)|

I checked the disassembly of my particular laptop model on YouTube -->

Step-by-step instructions: how to disassemble a laptop and get to the processor

There is no universal disassembly algorithm - the design of laptops is very different. For example, to get to the processor in Lenovo Legion, you only need to remove the bottom cover, and HP Pavilion you will have to disconnect the keyboard. We will describe general procedure, but before work, be sure to find a video disassembly specifically for your model (for example, on YouTube by request “ASUS TUF A15 disassembly»).

Step 1: Removing the Bottom Cover

Most laptops (except MacBook and some Dell) have a removable bottom panel. Carefully remove all screws - they are usually hidden under rubber feet or stickers. Screws can be of different lengths! Take a photo of their location or put them in order.

Step 2. Disconnecting cables and battery

After removing the cover you will see:

• 🔋 Battery (if non-removable, disconnect the power cable).
• 🖥️ Hard drive/SSD (can be temporarily disabled for convenience).
• 🌬️ Cooler (usually attached with 3-4 screws to the radiator).

Step 3. Dismantling the cooling system

The radiator with cooler is attached to the processor and video card (if any) with screws. Unscrew them diagonallyto avoid distortion! After removing the radiator, you will see old thermal paste - it may be dry, cracked, or even absent altogether (this happens after “repairs” in dubious services).

What to do if the screw gets stuck?

If the screw does not unscrew, do not apply force - this will break the slot. Try:

1. Drip WD-40 or alcohol on the thread, wait 5 minutes.

2. Use a screwdriver with magnetic tip (better grip).

3. Heat the area with a hair dryer (no higher than 60°C) - the metal will expand and the screw will go easier.

If all else fails, contact service: a broken screw in the radiator may require replacement of the entire cooling system.

Removing old thermal paste and applying new one

This is the most critical stage. Errors here will either lead to poor heat dissipation (the laptop will continue to heat up), or chip damage (if you use liquid metal). Follow the algorithm:

1. Cleaning the processor and heatsink

• 🧴 Soak it lint-free cloth in isopropyl alcohol (90%+).
• 🧽 Gently wipe the surface of the CPU and GPU no pressure (chips are fragile!).
• 🔍 Check if there are any particles of old paste left in the recesses (use a toothpick or plastic card).

2. Applying thermal paste

Key rule: less is better. Excess paste creates a “cushion” that impairs heat dissipation. Optimal application methods:

• ⬛ Center point (for square chips, e.g. Intel Core i7).
• — Stripe (for narrow chips, as in AMD Ryzen 5).
• ⚫ Cross (for large chips, e.g. NVIDIA RTX 3080 Mobile).

Paste volume - s grain of rice (about 0.1 ml). After application don't smear it - with radiator pressure it will be evenly distributed on its own.

3. Features of liquid metal

If you have chosen Thermal Grizzly Conductonaut or analogues:

• 🛡️ Cover the edges of the chip Kapton tape (sold in electronics stores).
• 🎨 Apply thin layer (the thickness of a sheet of paper) using a brush or plastic card.
• ⚡ Check with a multimeter that there is no short circuit between the contacts of the chip and the radiator!

⚠️ Attention: On laptops with soldered video card (For example, MSI GS66 or Gigabyte Aorus) incorrect application of liquid metal can lead to chip detachment from the fee. In this case, repairs will cost 30 000–50 000 ₽.

Assembling the laptop and turning it on for the first time

Reassembly is often more difficult than disassembly. Here are the key points to pay attention to:

• 🔧 Tighten the screws in a crisscross pattern (like the wheels of a car) to avoid skewing the radiator.
• 🔌 Connect cables carefully - they are fragile, and repeated repairs will be expensive (for example, a keyboard cable for MacBook Pro worth it 8 000 ₽).
• 📏 Check clearances — if the lid does not close, it means you forgot to connect the cable somewhere or installed the radiator incorrectly.

After assembly:

1. Connect the laptop to power without battery (in case of short circuit).
2. Turn it on and immediately check the temperature in HWMonitor or AIDA64.
3. Run a stress test (eg Prime95 for CPU or FurMark for GPU) and watch the temperatures:

• 🟢 Norm: to 85°C under load (for gaming laptops).
• 🟡 Warning: 85–95°C — perhaps you need to redo the application of the paste.
• 🔴 Dangerous: higher 95°C - urgently turn off the laptop and check the assembly.

If temperatures remain high, the reasons may be:

• 🌀 Poor contact between the radiator and the chip (check if the radiator is bent when tightening).
• 🧹 Fan dustiness (even after cleaning, dust could remain in hard-to-reach places).
• 🔧 Incorrect thermal paste (for example, ceramic paste on a powerful AMD Ryzen 9).

Common mistakes and how to avoid them

Even experienced users sometimes make annoying mistakes when replacing thermal paste. Here are the top 5 mistakes and their consequences:

Error	Consequences	How to avoid
Too much thermal paste	Overheating due to the “cushion”, leakage onto the board	Apply an amount the size of a grain of rice
Using liquid metal without insulation	Short circuit, chip failure	Cover the edges of the chip with Kapton tape
Tightening the radiator screws “one way”	Radiator distortion, uneven heat dissipation	Tighten the screws crosswise in 2-3 steps
Cleaning with alcohol <90%	Remains of moisture on the board, corrosion	Use only isopropyl alcohol 90%+
Forgot to turn off the battery	Short circuit, burnt components	Always turn off the power and remove the battery

Another common problem is damage to thermal pads on memory chips or VRM. If you tore them, don’t leave them like that: replace them with new ones (they cost 200–500 ₽) or at least apply a thin layer of thermal paste. Without this, the elements will overheat and the laptop will start to slow down even in simple tasks.

Myths about thermal paste that you shouldn’t believe:

• ❌ «Arctic Silver 5 - the best paste for all laptops" → It actually contains silver and can cause corrosion of aluminum radiators.
• ❌ “Thermal paste needs to be changed once a year” → High-quality pastes (Noctua NT-H2) last 5+ years.
• ❌ “Liquid metal will reduce the temperature by 30°C” → The difference with good silicone paste is only 5–10°C, but the risks are higher.

FAQ: answers to frequently asked questions

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

Yes, but with reservations. PC pastes (for example, Thermal Grizzly Kryonaut) are also suitable for laptops, but:

• Check thermal conductivity - enough for laptops 8–12 W/mK.
• Make sure the paste does not contain abrasive particles (For example, Arctic Silver 5 undesirable for aluminum radiators).
• Often used in laptops thin layers of paste (0.1 mm), so thick pastes (for example, Cooler Master MasterGel) may not be suitable.

How much thermal paste does a laptop need?

The volume depends on the number of chips:

• 1 chip (CPU only): 0.3–0.5 g (the size of a pea).
• 2 chips (CPU + GPU): 0.6–1 g.
• 3+ chips (CPU + GPU + memory chips): to 1.5 g.

Pastes are usually sold in tubes for 1–5 g, this is enough for 3-10 replacements.

What to do if after replacing the thermal paste the laptop gets even hotter?

Possible causes and solutions:

1. Poor contact between the heatsink and the chip → Reassemble the laptop and check for evenness.
2. Too thick layer of paste → Remove excess and reapply.
3. Wrong paste → For example, ceramic paste on a powerful AMD Ryzen 9 won't cope. Replace with Thermal Grizzly Kryonaut.
4. Forgot to connect the cooler → Check if the fan spins when turned on.
5. Dust in the radiator → Even after cleaning, dust could remain between the ribs. Blow with compressed air.

If the problem persists, the chip itself may be faulty (for example, crystal degradation at Intel 10th generation).

Is it possible to replace thermal paste on a laptop without disassembling it?

No. Thermal paste is applied between the processor and the heatsink, and you can only get to it by disassembling the laptop. Alternative "solutions" like:

• “Blow out the dust” → This will only help if the problem is dust and not the paste.
• “Use a cooling pad” → Reduces temperature by 3–5°C, but does not solve the problem of dried out paste.
• “Reduce voltage in BIOS” → Will reduce performance and still will not eliminate overheating.

The only safe way is disassembly and replacement of paste.

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

The service life depends on the type of paste and operating conditions:

• Silicone pastes (Arctic MX-6, Noctua NT-H2): once every 3–5 years.
• Ceramic pastes (Arctic Ceramique): once every 1–2 years.
• Liquid metal (Conductonaut): once every 5–7 years (but requires careful application).
• Graphite gaskets: no replacement required 10+ years.

If the laptop is used in dusty room or at high temperatures (for example, in summer without air conditioning), the paste should be checked more often.