The laptop gets very hot: how to reduce the temperature of the processor and video card

Laptop overheating is a problem that every second user faces. Do you notice that the case becomes hot, the coolers are noisy at maximum speed, and performance drops to the level of a typewriter? In worst cases, the device suddenly turns off or appears BSOD (blue screen of death) with error WHEA_UNCORRECTABLE_ERROR. The reasons may lie in both hardware faults and software settings.

In this article we will look at 7 Key Methods, how to reduce the temperature of a laptop - from basic (cleaning dust) to advanced (undervolting and replacing the thermal interface). You will find out what models most susceptible to overheating (for example, ASUS ROG Zephyrus or MacBook Pro with chips M1/M2), how to properly monitor the temperature and when it’s time to take the device to service. All recommendations are based on tests and repair experience of more than 500 laptops from different brands.

1. Why does the laptop get hot: the main reasons

Before you begin "treatment", you need to understand source of the problem. Overheating is always a consequence, and the causes are divided into two groups: hardware And software. Let's look at each in detail.

Hardware reasons:

• 🧹 Dust in the cooling system - the most common factor. Dust accumulates on the radiator and cooler blades, blocking air exchange. This is especially true for laptops older than 2 years.
• 🧴 Dried thermal paste. Over time, it loses thermal conductivity, and the processor begins to “boil” even under minimal loads. Critical for gaming laptops (For example, MSI GT76 or Lenovo Legion).
• 🔧 Faulty cooler. If the fan does not spin up to the required speed or has stopped altogether, the temperature rises to 100°C for 5–10 minutes.
• 🔥 Poor contact between the heatsink and the chip. Happens after falls or unskilled assembly.

Software reasons:

• 🖥️ Background processes. Antiviruses (Kaspersky, ESET), mining viruses or Windows updates can load the CPU at 100%.
• 🎮 Games and heavy applications. Cyberpunk 2077, Blender or Adobe Premiere accelerate the temperature to 90–95°C even on top-end laptops.
• ⚙️ Incorrect BIOS/UEFI settings. For example, disabled Intel SpeedStep or forced acceleration (overclocking).
• 🔄 Outdated drivers. Especially critical for video cards NVIDIA And AMD.

If the laptop gets hot even in idle time (for example, when watching YouTube or working in Word), the problem is almost always hardware. If heating occurs only under load, check the software factors first.

2. How to check laptop temperature

Before taking action, you need to measure current indicators. Normal temperatures for laptops:

• 🌡️ During idle time: 35–50°C (processor), 40–55°C (video card).
• 🎮 Under load: 70–85°C (CPU), 75–88°C (GPU).
• ❌ Critical: above 90°C - risk throttling (forced frequency reduction) or emergency shutdown.

For monitoring, use these programs:

Program	Pros	Cons	Link
HWMonitor	Shows all sensors (CPU, GPU, HDD), minimalistic interface	No temperature chart	Official website
Core Temp	Displays the temperature of each CPU core, supports AMD Ryzen And Intel Core	Advertising in the free version	Download
MSI Afterburner	Ideal for gamers, shows FPS and GPU temperature in game	Difficult for beginners	Official website
ThrottleStop	Allows you to fine-tune CPU voltage and frequency	Processor only Intel	Download

For a load test, run Prime95 (for CPU) or FurMark (for GPU) for 10–15 minutes. If the temperature exceeds 90°C, take immediate action!

3. Cleaning your laptop from dust: step-by-step instructions

If the laptop gets hot even in idle time, dust is 90% to blame. You can do the cleaning yourself, but be careful: incorrect actions may damage the components.

What you will need:

• 🔧 Screwdriver (usually Phillips #0 or Torx T5).
• 🌬️ Compressed air cylinder (for example, Kontakt Chemistry).
• 🧴 Isopropyl alcohol (70% or higher) and cotton swabs.
• 🔌 Antistatic bracelet (optional, but recommended).

Step by step process:

1. Turn off the laptop, unplug the charger and take out the battery (if it is removable).
2. Remove all screws on the bottom cover. Be careful: some screws may be hidden under feet or stickers.
3. Carefully remove the cover. If it does not budge, check that all the screws are unscrewed (sometimes they are hidden under RAM or SSD).
4. Find the cooling system (radiator + cooler). It is usually located next to the processor and video card.
5. Blow off the dust with a can of compressed air. Keep it vertical to avoid splashing liquid! Direct the stream from radiator to fan.
6. If the dust is ingrained, soak a cotton swab in isopropyl alcohol and carefully clean the cooler blades.
7. Reassemble the laptop in reverse order. Make sure that all screws are tightened tightly, but not fanatically.

What to do if the laptop cannot be disassembled?

Some models (eg MacBook Air or Dell XPS 13) have a non-separable body. In this case, it is better to entrust cleaning to a service center. Attempting to open such a laptop yourself may result in damage to the cables or loss of warranty.

⚠️ Attention: Never use a vacuum cleaner to clean your laptop! Static electricity can damage the motherboard. Also avoid wet wipes - they leave streaks and can cause corrosion.

4. Replacing thermal paste and thermal pads

If cleaning does not help, the next step is replacement of thermal interface. Thermal paste dries out over time and loses thermal conductivity. In gaming laptops (eg. ASUS TUF or Acer Predator) it has to be changed every 1–2 years.

Which thermal paste should I choose?

Model	Thermal conductivity (W/mK)	Pros	Cons
Arctic MX-6	11.0	Easy to apply, non-conductive, long service life	Requires "grinding in" (maximum efficiency after 200 hours)
Noctua NT-H2	8.9	Does not dry out for 5+ years, spatula included	High price
Thermal Grizzly Kryonaut	12.5	Better thermal conductivity, ideal for overclocking	Dries in 1–2 years, difficult to apply
Coollaboratory Liquid Ultra	38.4	Liquid metal - highest thermal conductivity	Conducts current! For advanced users only

How to apply thermal paste correctly?

• 🧴 Remove old paste with a napkin soaked in isopropyl alcohol. Wipe the surface of the chipset until it shines.
• 🎨 Apply new paste thin layer (the size of a pea). Excess impairs heat dissipation!
• 🔧 Gently press the radiator and secure it with screws. Tighten them up criss-crossto avoid skew.

Often used for video cards thermal pads (for example, for memory chips GDDR6). They also need to be replaced if they become hard or crumble. The optimal thickness is 1–1.5 mm, thermal conductivity is from 6 W/mK.

⚠️ Attention: Liquid metal (Coollaboratory or Thermal Grizzly Conductonaut) gives the best results, but requires experience. If applied incorrectly, it can short out the contacts on the motherboard! For beginners it is better to choose Arctic MX-6 or Noctua NT-H2.

5. Software optimization

If hardware methods do not help or the laptop only heats up under load, it’s time to optimize software. Let's start with the simplest thing - process management.

How to reduce the load on the CPU and GPU:

• 🖥️ Close background programs. Open Task Manager (Ctrl+Shift+Esc), sort processes by CPU load and terminate unnecessary ones (for example, Microsoft Edge in the background or NVIDIA Container).
• 🛡️ Check for viruses. Mining viruses (WannaMine) can load the processor at 100%. Scan the system Malwarebytes or Kaspersky Virus Removal Tool.
• 🎮 Limit FPS in games. In the graphics settings, set the limit to 60–90 FPS (depending on the monitor). This will reduce the load on the GPU by 20-30%.
• ⚙️ Disable unnecessary services. Press Win+R, enter msconfig, go to the tab Services and disable everything except system ones (check Don't show Microsoft services).

Power settings:

Go to Control Panel → Power Options and select a scheme Balanced or Energy Saving. For additional settings:

1. Click Set up power plan → Change advanced settings.
2. Find a section Processor power management.
3. Install Maximum processor state by 80–90% (instead of 100%).

For laptops with NVIDIA or AMD video cards, it is useful to limit the GPU power through MSI Afterburner:

• Open the program and find the slider Power Limit (%).
• Reduce the value by 10–15% (for example, from 100% to 85%).
• Save the profile (button Save + slot number).

6. Undervolting: reducing processor voltage

Undervolting - This is a reduction in the voltage supplied to the processor without losing performance. The method only works for Intel (starting from Skylake) and some AMD Ryzen (series 3000+). Allows you to reduce the temperature by 15–25°C and increase battery life.

How to do undervolting:

1. Download ThrottleStop (for Intel) or Ryzen Controller (for AMD).
2. Launch the program and go to the tab FIVR (in ThrottleStop).
3. Find the parameter CPU Core Voltage and reduce it by 50–100 mV (for example, from 1.250V to 1.150V).
4. Click Apply and test stability in Prime95 or Cinebench.
5. If the laptop does not turn off or display errors, reduce the voltage by another 10–20 mV until you reach the stability limit.

Warnings:

• ⚡ Do not reduce the voltage by more than 150 mV at a time - this may lead to BSOD.
• 🔋 Undervolting is reset after updating the BIOS. Save your profile to ThrottleStop (button Save).
• 🚫 Do not confuse undervolting with underclocking (reduction of frequencies) - the latter greatly reduces performance.

What is throttling?

Throttling is a forced reduction in processor frequencies when overheated. For example, Intel Core i7-12700H may drop from 4.7 GHz to 800 MHz if the temperature exceeds 100°C. Undervolting helps avoid this.

7. Additional cooling methods

If all of the above methods do not help, consider these options:

External coolers:

• 💨 Stand with coolers. Models with 3–5 fans (e.g. Cooler Master NotePal X3) reduce the temperature by 5–10°C. Effective for laptops with bottom vents.
• ☃️ Cooling pad with Peltier element. Cools to 15-20°C, but requires USB connection and may condense.

Hardware modifications:

• 🔧 Replacing thermal pads with copper ones. Copper pads (0.5–1 mm thick) better remove heat from video card memory chips.
• 🌀 Installing an additional cooler. Some laptops (eg. Lenovo ThinkPad P-series) you can add a second fan.
• 💻 Replacing thermal paste with liquid metal. As mentioned earlier, this is risky, but gives better results.

Extreme measures:

• ❄️ Use of cold. Some gamers place the laptop on an ice pack (wrapped in a towel!) for temporary cooling. Not recommended - may cause condensation.
• 🔥 Flashing the BIOS. Some manufacturers (for example, ASUS) are releasing BIOS updates with improved cooling profiles. But this is risky - if there is an error, the laptop may stop turning on.

⚠️ Attention: If after all the manipulations the laptop continues to heat above 90°C when idle, most likely the problem is faulty chipset or damaged motherboard. In this case, only a service center will help.

FAQ: Frequently asked questions about laptop overheating

🔍 Why does a new laptop heat up immediately after purchase?

This is normal for gaming or productivity models (for example, ASUS ROG Strix or MacBook Pro M1 Max). Manufacturers often set aggressive cooling profiles to ensure maximum performance. Give the laptop 1–2 weeks to “break in” the thermal paste. If the temperature does not drop, contact the warranty service.

🎮 Is it possible to play on a laptop if it heats up to 95°C?

Short-term (1-2 hours) - yes, but this reduces the life of the components. At temperatures above 90°C, the degradation of silicon chips accelerates, and thermal paste dries out faster. For long sessions, it is better to limit FPS or lower graphics settings.

💻 Why does the laptop heat up even when it is turned off (in sleep mode)?

In sleep mode (Sleep Mode) some components (for example, RAM or Wi-Fi module) remain energized. If laptop hot to the touch, check your power settings: disable allowed charging in sleep mode (Control Panel → Power Options → Layout Settings → Change Advanced Settings → Sleep → Allow Hybrid Sleep).

🔋 Does charging affect the heating of a laptop?

Yes. When operating on mains power, the processor and video card receive more power and therefore heat up more. To reduce heat:

• Turn off charging during simple tasks (for example, working in Excel or watching a video).
• In BIOS settings, disable Always On USB (if you are not using USB-C charging).
• Use the original power supply - inexpensive analogues may supply unstable voltage.

🛠️ How much does it cost to clean a laptop from dust in the service?

The cost depends on the model and the complexity of disassembly:

• Office laptops (Lenovo ThinkPad, HP EliteBook): 1 500–2 500 ₽.
• Gaming laptops (MSI GE76, Acer Nitro 5): 2,500–4,000 ₽ (due to the complex cooling system).
• MacBook (any model): RUB 3,500–6,000 (special tools and skills required).
• Replacing thermal paste: +1,000–1,500 RUR to the cost of cleaning.

The average service life after cleaning is 1–2 years (depending on operating conditions).