Laptop overheating HP Pavilion - one of the most common problems that users encounter after 2-3 years of active use. This is often due to worn out cooling system cooler, which begins to make noise, rotate poorly or stops altogether. If you notice that your laptop suddenly turns off during games, slows down when rendering videos, or the bottom of the case becomes unbearably hot, it's time to think about replacing the fan.

In this article we will look at step-by-step process for replacing the cooler on series laptops HP Pavilion (including popular models 15-cs, 15-eg, 14-dv, 17-ar and others). You'll learn how to choose the right compatible fan, what tools are needed for disassembly, and how to avoid common mistakes that can damage the motherboard or cables. We will pay special attention Hidden fastenings under the keyboard and the nuances of disconnecting the cooler cable are the most vulnerable points during DIY repairs.

Signs of a cooler malfunction: when is it time to change it?

Before you take a screwdriver, make sure that the problem is with the fan. Here are the key symptoms indicating the need for replacement:

  • 🔊 Constant noise even with minimal load, the cooler bearing is worn out, the blades cling to the body.
  • 🌡️ Critical temperatures: CPU/GPU heats up to 90°C+ when idle (check in HWMonitor or AIDA64).
  • 🖥️ Spontaneous shutdowns when under load, thermal protection is triggered.
  • 🌀 Cooler does not spin or rotates jerkily (visible through the ventilation grilles).
  • 🚨 BIOS errors: messages like Fan Error or 90B (fan fault code for HP).

If at least 2-3 items from the list match, the cooler requires replacement. But before buying a new one, check if the cooling system is clogged with dust. Sometimes it's enough cleaning and lubrication (more about this in the section on diagnostics).

⚠️ Attention: On laptops HP Pavilion with hybrid graphics (NVIDIA MX or AMD Radeon) overheating is often disguised as “brakes” in games. If FPS drops after 10-15 minutes of gameplay, this is a sure sign of cooling problems.
📊 How often do you clean your laptop cooling system?
  • Once every 3 months
  • Once every six months
  • Once a year
  • Only when it starts to warm up
  • Never

Choosing a cooler: how to choose a compatible model?

A mistake in choosing a fan can result not only in loss of money, but also motherboard damage due to incompatible connector or dimensions. Here's how to avoid this:

  1. Find out the exact laptop model. It is indicated on the sticker below (for example, HP Pavilion 15-eg0004ur). If the sticker has worn off, look in the BIOS (F10 when loading) or through the command in Windows: 
    wmic csproduct get name
  2. Find the original cooler part number. To do this:
  • 🔍 Visit the website HP support, enter your laptop model → User manuals → Spare parts and components.
  • 🛒 Search in online stores (for example, AliExpress, eBay) on request: HP Pavilion [your model] cooling fan.
  • 📏 Check the dimensions! U Pavilion 15 And 17 often different sizes of coolers (for example, 70x70x10 mm vs 80x80x12 mm).
Laptop model Article number of the original cooler Dimensions (mm) Compatible analogues
HP Pavilion 15-cs3xxx L38622-001 70×70×10 Delta AFB0705HH, Sunon MF70101V2
HP Pavilion 15-eg0xxx L38623-001 70×70×12 Nidec TA450DC, AVC D70SM-12
HP Pavilion 17-ar0xxx L38624-001 80×80×12 Delta AFB0812HH, Sunon MF80101V3

If you are not sure about the choice, pay attention to number of contacts on the connector (usually 3 or 4). U HP Pavilion a 4-pin connector with speed control is often used (PWM). Also check if it comes with a cooler thermal paste - if not, you will have to buy separately (we recommend Arctic MX-6 or Noctua NT-H2).

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Before purchasing a cooler, check the seller's reviews! Counterfeits often have low-quality bearings that fail after 2-3 months.

Tools and preparation for disassembly

To replace the cooler with HP Pavilion you will need:

  • 🔧 Screwdriver set: cross PH00 (for small screws), flat 1.5 mm (for latches), five-pointed T5 (for some models).
  • 🧲 Magnetic mat or a container for screws - they are easy to lose!
  • 🧴 Thermal paste (if not included with the cooler).
  • 📸 Smartphone — photograph every step of disassembly, especially the location of the cables.
  • 🧴 Isopropyl alcohol (90%+) and cotton swabs for cleaning the radiator.

Important! Before disassembly:

  1. Turn off your laptop and disconnect the battery (if it is removable).
  2. Unplug the charger.
  3. Work for antistatic mat or at least touch a grounded object (such as a radiator) to remove static electricity.

Disconnect the power and battery|Prepare tools and a container for screws|Take photographs of the initial state of the cables|Clean the work area from dust and debris-->

⚠️ Attention: U HP Pavilion 15-eg and newer battery often soldered into the motherboard. In this case, before disassembling, be sure to disconnect the battery cable from the board (usually it is located under the keyboard and marked in red).

Step-by-step disassembly of an HP Pavilion laptop

The disassembly process may vary depending on the model, but the general scheme is the same. Let's look at an example HP Pavilion 15-cs3000:

  1. Remove the bottom cover:

    Unscrew all the screws on the back panel (usually 8-10, some hidden under the rubber feet). Be careful - HP Screws of different lengths are often used! Store them separately.

    Use a plastic card or pick to pry the cover open, starting at the corner near the touchpad. The latches are fragile - do not use excessive force.

  2. Disconnect the battery (if removable) and cooler cable:

    The fan cable is usually black with 3-4 wires. Gently pull the plastic connector, do not pull the wires!

  3. Remove the cooling system:

    Unscrew the screws securing the radiator (usually 4-6 pieces). They can be hidden under thermal pads. After removing the screws, carefully lift the heatsink - the thermal paste may stick to the processor.

Critical moment: On some models HP Pavilion The cooler is attached not only to the radiator, but also to the plastic case of the laptop with additional latches. If the fan cannot be removed, check for hidden latches!

How to remove the keyboard on HP Pavilion?

On most models, the keyboard is secured with latches at the top. To remove it:

1. Carefully pry up the top bar above the keys F1-F12 plastic card.

2. Unscrew 2-3 screws under the keyboard (usually under Space And Enter).

3. Lift the keyboard from the top edge and disconnect the cable (the connector is often white).

⚠️ Do not pull the wires - the cable is easy to break!

After removing the cooler, clean the radiator from the old thermal paste with isopropyl alcohol. Do not use acetone or solvents - they may damage the plastic!

New cooler installation and assembly

The installation process is the reverse of disassembly, but there are several critical nuances:

  1. Applying thermal paste:

    Apply thermal paste to the processor (CPU) and video card chip (if there is discrete graphics). thin layer (about the size of a grain of rice). Excess paste will lead to overheating!

  2. Connecting the cooler cable:

    Make sure the connector is inserted until it clicks. On some models HP Pavilion the train has key (tab on one side) - do not try to insert it incorrectly.

  3. Tightening the radiator screws:

    Tighten them up criss-cross (like the wheels of a car) to avoid distortion. Start with the diagonal screws, then the rest.

After assembly, do not rush to turn on the laptop! First:

  • 🔍 Check if all cables are connected (especially the touchpad and keyboard).
  • 🔌 Connect the charger and make sure the power indicator is on.
  • 🌡️ Start the laptop and immediately check the cooler speed in the BIOS (F10 → System Information → Fan Speed).
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If after assembly the cooler does not rotate, check the polarity of the cable connection. There is usually a marking on the motherboard connector + And –.

Testing and diagnostics after replacement

Successfully replacing the cooler is only half the battle. Now you need to make sure that the cooling system is working correctly:

  1. Checking in BIOS:

    Go to BIOS (F10 on boot) and find the section Hardware Monitor or System Information. The cooler speed must be in the range 2000–4000 RPM (depending on load).

  2. Stress test:

    Use programs AIDA64 (stability test) or Prime95 for CPU load. The temperature should not exceed:

    • 🌡️ 75–85°C for processors Intel Core i5/i7 (series H or U).
    • 🌡️ 80–90°C for AMD Ryzen 5/7 (but not higher than 95°C!).

  • Noise check:

    The fan should not creak, knock or vibrate. If you hear extraneous sounds, it is possible that the blades are touching the body or the cooler is installed crookedly.

    • If the temperature remains high (above 90°C under load), possible causes:

    • 🔴 Not enough thermal paste (or too much).
    • 🔴 Poor contact between the radiator and the processor (check the screws for tightness).
    • 🔴 Ventilation grilles clogged with dust (clean them with compressed air).
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    For accurate temperature monitoring, use HWInfo64. In the program settings, check the box Sensors-only and follow the charts in real time.

    Common mistakes and how to avoid them

    Even experienced users sometimes make mistakes when replacing a cooler. Here are the most common:

    Error Consequences How to avoid
    Using the wrong thermal paste (for example, silicone) CPU overheating, throttling, shutdowns Use metal based paste (Arctic MX-6, Noctua NT-H2)
    Retightening the radiator screws Cracks on the motherboard, deformation of the processor Tighten the screws crosswise firmly 0.5–0.7 Nm
    Connecting the cooler cable in reverse polarity The cooler does not rotate or constantly operates at maximum speed Check the markings on the connector (+/–)
    Forgot to disconnect the battery before disassembling Short circuit, motherboard failure Always disconnect the battery, even if the laptop is turned off

    Another typical problem is The cooler rotates, but does not regulate speed. This may be caused by:

    • 🔌 Damage to the train (check for breaks).
    • 🔌 Malfunction of the temperature sensor on the motherboard.
    • 🔌 Using a 3-pin cooler instead of a 4-pin (without support PWM).

    If after replacing the cooler the laptop becomes switch off more oftenthan before - check the BIOS settings. Sometimes resetting settings (F10 → Load Default Settings) helps restore the correct operation of the cooling system.

    FAQ: answers to frequently asked questions

    Is it possible to replace the cooler on an HP Pavilion without disassembling the entire laptop?

    No, on most models HP Pavilion The cooler is integrated into the cooling system, which is attached to the motherboard. To replace it, you must remove the bottom cover, disconnect the battery and radiator. The exception is some models with a modular design (for example, HP Pavilion Gaming), where the cooler can be removed through a special hatch.

    How much does it cost to replace a cooler at a service center?

    The cost of the service varies from 1500 to 4000 rubles, depending on the laptop model and region. The part itself will cost 800–2500 rubles (original or high-quality analogue). If your hands are growing out of the right place, replacing them yourself will save up to 50% of your budget.

    How often should you change the cooler on your laptop?

    The service life of the cooler depends on the intensity of use:

    • 🖥️ Office use (documents, Internet): 4–5 years.
    • 🎮 Gaming/Rendering (permanent load): 2–3 years.
    • 🌪️ Extreme conditions (dust, high humidity): 1–2 years.

    Will help extend the life of the cooler regular cleaning (every 6 months) and bearing lubrication (every 1–2 years).

    What to do if after replacing the cooler the laptop does not turn on?

    Possible causes and solutions:

    1. Unconnected loop — check all connectors (especially power and cooler).
    2. Short circuit - Inspect the motherboard for damage.
    3. Reset BIOS - remove the battery CR2032 for 10 minutes or use a jumper CLR_CMOS (if any).
    4. Damaged cooler — check it on another device or replace it with a known working one.

    If the problem persists, contact service.

    Can I use a cooler from another laptop?

    Theoretically yes, but only if they match:

    • 🔌 Power connector (3-pin or 4-pin).
    • 📏 Dimensions (width, height, thickness).
    • 🔄 Direction of rotation (indicated by the arrow on the cooler body).

    For example, a cooler from Lenovo IdeaPad with the same parameters can be suitable for HP Pavilion, but this is a risk - it is better to take the original or a certified analogue.