Let's try to figure out why the cooler is noisy in the computer, find out how to fix it and eliminate the fan noise with our own hands.

High noise levels from computer fans are a fairly common problem and often occur on older systems with poor or poorly designed ventilation. If your computer has not been cleaned of dust for a long time, I recommend starting with this. Then learn how to change the thermal paste on the processor and video card. But sometimes the problem lies in insufficient lubrication of the coolers. Then you will need to lubricate the fan, this is easy to do, but you may need to disassemble it.

How to lubricate a computer cooler to stop it making noise

You can use inexpensive LITOL, but I recommend sewing machine oil or use high-quality silicone fan grease.

Litol: When using it, you need to understand that you will have to completely disassemble the fan. Remove the lock washer, remove the plain bearings, and disconnect the impeller. Then clean everything of old grease and dust, and only then lubricate the fan running parts.

Quality lubricant: but silicone grease for coolers is a special synthetic base. It does not contain harmful substances and is suitable for any fan with a plain bearing. Sewing machine oil has approximately the same properties.

Solid oil: has the same effect on moving fan parts as LITOL. I have used it several times and I will say - Litol24 or LitolLUXE will work for lubricating coolers the best option, after silicone-based lubricant.

How are computer fans lubricated?

To lubricate and eliminate rattling or noise, just peel off the label, remove the cap and drop a little silicone grease from a syringe into the hole, that’s it, the job is done. If grease or lithol is used, you will have to disassemble the fan and clean the inside of adhering dirt and old grease.

Although it happens that the fan is still noisy, even after a fresh dose of lubricant. Read below to find out how to fix this; there is also a training video on disassembling a non-removable cooler. It’s good that when using high-quality silicone oil, the lubrication procedure has to be repeated, no more than once a year.

What should not be used to lubricate the fan?

Do not lubricate the fan with oil containing animal or vegetable fats. Otherwise, there is a risk of computer failure due to short circuit or overheating.

The cooler in the computer can also be lubricated with another synthetic lubricant, but before using it, make sure that it can withstand temperatures above 90 degrees and is not electrically conductive.

LITOL is the head of everything!

If the temporary specific smell does not irritate you too much, then we make a choice in favor of Litol LUXE. Its main advantage is that it is cheap and is sold in any hardware store. You can also look for it at a car parts store and borrow a little from a friend who has a bike.

What do fan bearings look like?

The sliding bearing looks like a silicone circle, orange or black, sometimes all-metal ones are found.

An all-metal plain bearing should not be confused with rolling bearings, which may be similar in appearance. After all, the latter are not lubricated, but replaced with new ones.

When the rolling bearing is in place, I repeat, there is no need to lubricate it, it is useless, it will still rattle. It is necessary to clean the blades and internal parts from dust. And wipe the bearing itself with a cotton swab, or one soaked in alcohol, then assemble the “spinner.”

Still rattling? Then replace the bearing with a serviceable one, purchase it from the link above. Or we buy a new fan if invisible notches have formed on the support rod, we can determine by the rustling sound when the assembled impeller rotates.

How to disassemble and lubricate the cooler on a video card, processor and power supply

Let's get started, open the lid from the beginning system unit and remove the poorly functioning “spinner” from the computer. Then peel off the sticker and here we come to the most crucial moment - removing the locking washer.

We pry it off with a screwdriver or tweezers on a fan that has a special hole. What if there is no hole for lubricant supply, such as in the image below. You will have to pull out the impeller, this is done simply, the main thing is not to break off the blades. With your thumbs on the center of the “valve”, start squeezing the impeller until it disconnects (helps on a video card).

We did it well, let's move on to the next stage. We pull out the impeller, the bearings, of which there are usually two, and set them aside so as not to lose any parts. Now we see what kind of bearings we have, rolling or sliding.

When the cooler in the computer is noisy due to the plain bearing, then fix it this situation What will help us is the correct choice of lubricant, as well as cleaning of dust and the previous layer of fat using acetone or alcohol, then we collect everything in reverse order, as it was. Well, when it is the increased noise that is bothering you, then I recommend checking the temperature of the main elements in the system with the program.

Video on fan lubrication

We didn’t understand something, it doesn’t matter, watch a video on the topic of disassembling and lubricating the “valves” of a computer at home.

If the power supply cooler is noisy

If there is noise coming from the power supply, you need to disassemble and clean it, the main thing is to disconnect it from the network. Then pull out all the MOLEX, SATA, PCI-E and other wires from the grooves. Now place it with the grille facing up, unscrew the four screws on the sides of the front side of the block. All that remains is to remove the cover and finally, use a can of compressed air or a brush.

This way we will eliminate the main reason why the power supply cooler is noisy; if there is rattling, you will also need to add lubricant to the fan. Next, you need to reassemble it as it was, secure the 120 mm “valve” power wire in place and check it. It didn’t help, so we’re looking for the reason, friends.

Noise Reduction Methods for Axial Fans

S. V. Karadzhi, N.E. Bauman Moscow State Technical University
Yu. G. Moskovko, LLC “INNOVENT”

Keywords: ventilation system, aerodynamic noise, harmonic, fan rotor

Noise is an important parameters of the majority of technical facilities, affecting their operating properties, environmental efficiency and competitive ability. The main noise sources in ventilation and air conditioning systems are fans. The article offers various methods for reduction of fan noise.

Description:

Noise is an important parameter of most technical objects, affecting their operational properties, environmental friendliness and competitiveness. In ventilation and air conditioning systems, the main sources of noise are fans. The article suggests various ways to reduce fan noise.

Ways to reduce the noise of axial fans

S. V. Karadzhi, MSTU im. N.E. Bauman, otvet@site

Yu. G. Moskovko, LLC "INNOVENT"

Noise is an important parameter of most technical objects, affecting their operational properties, environmental friendliness and competitiveness. In ventilation and air conditioning systems, the main sources of noise are fans. Often the restrictions placed on their noise levels are the deciding factor specifications the facility as a whole, therefore great attention is paid to reducing the aerodynamic noise of fans. What's on currently does science offer and what is implemented in the designs? The reader will find the answer to these questions in this article.

To minimize the noise of the ventilation system (without the use of sound-absorbing devices), several conditions must be met. Firstly, the ventilation system must be designed in such a way as to have minimal aerodynamic losses. Secondly, it is necessary to select the type of fan (radial, axial) and then correctly select the fan itself for the design mode. Finally, guidelines for optimal fan layout in the system must be followed to ensure a uniform speed profile at the fan inlet/outlet. It is desirable that the fan be low-noise. This article provides short review work on methods for reducing aerodynamic noise in axial fans and a number of designs of existing low-noise fans.

Aerodynamic noise can be caused by various types sources (monopole, dipole, quadrupole). These sources have different origins, but can be divided into two broad groups: sources that produce broadband noise (in which all frequencies are equally represented) and sources that produce discrete (tonal) noise (the radiation is concentrated only at some frequencies).

Sources that cause broadband noise from an axial fan include turbulent boundary layer noise on the blades; vortex noise associated with wakes behind the blades. Sources of discrete noise include rotational noise (load and displacement noise) associated with the rotation of the impeller blades; interaction noise associated with the interaction of the impeller with the stationary elements of the flow part. A large proportion of the fan noise may be noise associated with impeller imbalance, but since it is not aerodynamic, it is not considered in this article.

Reducing turbulent and vortex noise is a very difficult task due to the fact that this type of noise is associated with the flow around the impeller blades. To reduce it, it is necessary to optimize the shape of the impeller blades in order to ensure continuous flow around the entire length of the blade. However, in this way it is possible to achieve noise reduction to one degree or another, mainly at the design operating mode of the fan.

In some cases, for example if the blades have a non-optimal aerodynamic shape, the boundary layer noise may have discrete components. In this case, to reduce noise, blades with a serrated leading edge are used (Fig. 1). It is interesting to note that there are also fans with blades that have sawtooth leading edges, which promotional materials are also touted as low noise.

One method to reduce broadband noise would be to design the fan at the lowest possible speed. It is known that turbulent noise is a quadrupole type source, and its sound power is proportional to ~ u 8, and vortex noise is a dipole type source, and its sound power is ~ u 6 where u– peripheral speed. As the rotation speed decreases, rotation noise also decreases, which has a dipole (load noise) and monopole (displacement noise) nature, and their sound power is proportional to ~ u 6 and ~ u 4 respectively.

There are techniques that make it possible to design axial fans at lower rotation speeds by increasing the aerodynamic load on the blades. For example, due to a number of measures, including a decrease in the design rotation speed, the noise of one of the fans of the ISS Alpha life support system was reduced by 8 dBA. Since in this case the levels and distribution of pressure on the impeller blades and, accordingly, broadband noise change, this method does not always lead to the expected result.

Discrete components of the acoustic spectrum associated with rotation and interaction noise are typically 15–20 dB more high levels than broadband turbulent and eddy noise. Therefore, discrete noise has the most annoying effect on people.

One of the directions for reducing rotation noise, which is being intensively developed at present, is the use of impeller blades with a curved axis of profile alignment. In Fig. Figure 2 shows the blade and the rotational noise signals from its different sections (which have different phases due to the spatial shape of the blade). On the right is a vector diagram of the sum of the signals, from which it can be seen that with the correct combination of signal phases and amplitudes, rotational noise can be greatly reduced. The idea of ​​generating a phase shift of acoustic waves from different sections of impeller blades by changing the shape of the profile alignment axis is presented in. As an example in Fig. Figure 3 shows a fan wheel with a profile alignment axis curved in the direction of rotation.

This effect is widely used in axial fans of remote condenser units of split systems, in which the inlet edges of the blades at the periphery have a pronounced beak-like shape.

In fans made according to the “wheel (K) plus straightener (CA)” design, due to the interaction of the blade rims with each other, the spatial shape of the blades CA has a great influence on the noise level of the fan. Thus, the works present the results of studies on the effect of the inclination of the SA blades; at a certain inclination of the blades, a decrease in noise was noted. It should be noted that currently there are conflicting data on the influence of the spatial shape of the profile alignment axis on the noise of axial fans, so the appearance of curved blades does not always indicate that the fan is really low-noise, as stated in advertising materials.

A method is also used to reduce rotation noise by installing blades with uneven pitch. If the pitch is uneven, a sequence of pulses will be emitted from each blade sound pressure at uneven intervals of time, which leads to a decrease and “blurring” of discrete components (Fig. 4). The effect decreases as the number of impeller blades increases. Wheels of this type are most widely used in the automotive industry.

In fans with an inlet guide vane (IVA), there is interaction noise that occurs when traces or other elements of the flow path in front of the wheel interact with the rotating blades of the impeller. It is worth noting that the opposite effect also occurs, that is, the impeller affects the BNA, and similarly, the straightener (CA) affects the impeller, since this kind of interaction propagates upstream.

The ratio between the number of blades in the VNA or SA and the wheel is of great importance. To minimize interaction noise at certain harmonics at different speeds, the following condition must be met:

(1)

Where M u = u k/ c 0 ;
M ca = c a/ c 0 ;
u k – peripheral speed of the blade tips;
c a – axial speed;
To m – wave parameter;
m = │iz PK+ kz AP │;
k– coefficient running through the values ​​of all integers;
i– harmonic number.

In the same work, nomograms are given for choosing a favorable ratio of the numbers of wheel blades and devices.

The book offers a simplified expression for choosing the ratio of the number of impeller blades and straightener:

(2)

Where n- rotation frequency;
D– diameter of the impeller;
With– speed of propagation of pressure pulses.

It should be noted that when choosing the ratio of the number of blades in the apparatus and the wheel, it is impossible to ensure a reduction in the noise level at all harmonics of the blade frequency.

The structural elements of the fan: motor mounting racks, the electric motor itself (if it is installed in front of the wheel), etc., also have a strong influence on noise generation. Just like VNA or SA, they create wake vortices and turbulize the flow before or after the impeller, which can lead to an increase in noise level. The noise level is affected by the location of the structural elements relative to the wheel, the ratio of the number of mounting posts and the number of blades, the distance to the wheel blades, etc. Many computational and experimental studies have been carried out on the topic of rotor-stator interaction, from which it follows that there is no complete clarity on this issue.

Conclusion

a) for a fan of circuit K:

• at the inlet in front of the wheel, at a distance less than the chord of the blade, there is a mesh and electric motor mounting posts;
• the number of electric motor mounting posts is equal to or a multiple of the number of blades; the electric motor mounting racks are located from the wheel at a distance of less than 0.5 chord of the wheel blade;

b) for a ventilator with VNA or SA devices:

• the number of apparatus blades coincides with the number of wheel blades or is a multiple of them;
• the blades of the devices are located from the wheel at a distance of less than 0.5 chords of the wheel blade.

Literature

1. Aerodynamic noise in technology // ed. R. Hickling, 1977. 332 p.
2. Jay Patel, Kingston, N.Y., United States Patent, 4,089,618, May 16, 1978.
3. Mitrofovich V.V. Determination of the maximum design parameters of axial fans with high static efficiency // Industrial aerodynamics. M.: Mechanical Engineering, 1991. Issue. 4 (36). pp. 260–280.
4. Sustin S.A., Mitrofovich V.V., Isakovich S.A. Development of an experimental low-noise fan // Abstracts of the XIII All-Russian scientific and technical conference"Gas turbine and combined installations and engines", MSTU im. N.E. Bauman, 2008
5. Munin A.G., Samokhin V.F., Shipov R.A. and others. Aviation acoustics: in 2 hours. Part 1. Noise on the ground of subsonic passenger aircraft and helicopters. M.: Mechanical Engineering, 1986. 248 p.
6. Harvey H. Hubbard. Aeroacoustics of flight vehicles, Volume 1, Noise sources // NASA Reference publication 1258, vol. 1, WRDC Technical report 90–3052, 1991. 592 p.
7. Belamri T., Kouidri S., Fedala D. and Rey R. Comparative study of the aeroacoustic behavior of two axial flow fans with different sweep angles // Paper FEDSM2005–77242, Proceedings of ASME FEDSM'05, 2005 ASME Fluid Engineering Summer Conference Houston, TX, USA, June 16–23, 2005.
8. Jifu Lu Xinli Wei, Yang Li. Research on aerodynamics and exit flow field of skewed fan-rotors // Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific. Pp. 1–4.
9. Bamberberger Konrad, Carolus Thomas. Optimization of axial fans with highly swept blades with respect to losses and noise reduction // Fan 2012, Senlis (France), 18–20 April 2012, 12 p.
10. Khoroshev G. A., Petrov Yu.I., Egorov N.F. Fighting fan noise. M.: Energoizdat, 1981. 143 p.
11. Brusilovsky I.V. Aerodynamics and acoustics of axial fans // Proceedings of TsAGI im. prof. NOT. Zhukovsky. Vol. 2650. M., 2004. 275 p.
12. Lee, J. and Nam, K. Development of Low-Noise Cooling Fan Using Uneven Fan Blade Spacing, SAE Technical Paper 2008–01–0569, 2008.
13. Lu H. Z., Lixi Huanga, R. M. C. So and J. Wang. A computational study of the interaction noise from a small axial-flow fan // J. Acoust. Soc. Am., Vol. 122, No. 3, September 2007. Рp. 1404–1415.
14. Sawyer S., Nallasamy M., Hixon R., Dyson R.W., Koch L.D. Computational Aeroacoustic Prediction of Discrete-Frequency Noise Generated by a Rotor-Stator Interaction // 9th AIAA/CEAS Aeroacoustics Conference and Exhibit 2003. 18 p.
15. Woodward, R. P., Elliott, D. M., Hughes, C. E., and Berton, J. J. Benefits of Swept and Leaned Stators for Fan Noise Reduction // AIAA-99–0479, 1999. 12 p.

When extraneous and sometimes loud sounds are observed in the computer, you should promptly give this importance, probably the cooler is noisy, the hard drive is cracking or the BIOS is giving certain signals about a hardware failure. When noise is observed in the cooler, the situation is almost always fixable and can be eliminated without serious financial costs.

Why is the cooler noisy?

A cooler is a plastic fan that is installed on the radiator of heating elements, in particular microprocessors. Thanks to its operation, it is possible to remove heat efficiently and the processor can operate normally, which cannot be achieved in case of certain malfunctions of the cooler. When a cooler makes a lot of noise, you must first determine the cause, and then begin to solve the problem.

So we can identify several causes of noise:

1. Pollution. The most common problem and its characteristic symptom is noise, which was caused without any intervention in the computer. In this case, the user has no idea why the noise is observed, since everything was fine before. When a large amount of dust and dirt accumulates on the cooler, it gradually loses its quality characteristics and begins to make noise, clinging to the edges of the case. The problem is that the blades will be damaged: broken, unevenly worn, which will lead to imbalance of the device. In another case, constant mechanical impact prevents normal movement of the cooler and it stops, which leads to overheating and failure of the power supply, processor, video card;

1. Lubrication. The cooler, like all rubbing parts, contains lubricant; it uses a silicone type. Oil should be added periodically, otherwise sooner or later it will dry out. Another case is when a person adds grease to the fan too often and this causes it to become clogged. In some cases, WD-40 is used, which is absolutely not suitable for this purpose (although many claim that it works, you will have to lubricate it every 1-4 weeks), you should buy special silicone oil;

1. High cooler speed. In a normal situation, the computer independently determines at what speed the fan will spin. Some experts set parameters where the number of revolutions is always maximum, which results in noise and unproductive energy consumption. The user will simply have to lower the speed or enable automatic adjustment;

1. Incorrect housing fastening. Typically, coolers are installed on the case of a system unit or laptop, as well as on a processor radiator. If the fastenings are loose, rattling will become noticeable, and, accordingly, certain problems with the performance of the fan and the quality of heat dissipation will become noticeable;
2. A large number of coolers. New computers are increasingly equipped with coolers due to high performance and high heat. If you have a case with 5 or more active cooling systems, then count on low level There is no noise, although it is worth checking, maybe the situation can be improved somewhat.

It is worth noting that the noise increases under heavy load on the PC, for example, running games, demanding applications, and this is normal computer behavior.

Cleaning and lubrication

So, what to do when the cooler is noisy? The problem is that we don’t know whether the cooler on the processor, power supply, video adapter, etc. is noisy. Before starting the cleaning procedure, we need to determine which cooler is making the unpleasant noise.

In the case of a laptop, everything is somewhat simpler; it does not have a large number of fans, so the noise almost always comes from visible device, which is behind bars, usually at the bottom or sides of the PC. But the laptop is more difficult to clean.

For a desktop computer, everything is somewhat more complicated; it almost always has at least 3 active cooling systems. To determine the culprit of the unwanted sound, it is enough to stop each cooler in turn by touching your hand and check for the presence of noise. The first thing to start with is that the fan stops on the central processor, then the video adapter and, ultimately, on the power supply.

So, in order to eliminate noise, you should clean and lubricate the devices, let’s look at the example of a stationary PC:

1. Turn off the computer and disconnect power from the system unit;
2. Remove the side cover, usually the one on the left;

1. There are several options here:

• If there is noise from the central processor, you need to unscrew the 4 bolts at the edges of the case with the fan and remove it, but first disconnect the cable from motherboard(You don't have to turn it off). On one side there is a sticker that needs to be carefully peeled off. In order not to bother, you can simply pour a few drops of silicone oil into the hole. It is necessary to clean the blades with a brush or brush, and also remove dirt from the body and radiator itself;
• When noise comes from the video card, you need to clean it. It’s worth noting right away that coolers rarely become clogged, since they are most often located at the bottom of the board, although not always. The first step is to disconnect the video adapter by unscrewing the bolt securing one of the sides to the frame. You may have to remove the protective casing from the device. Often the cooler mount is located under it; you will have to take a small screwdriver and insert it between the blades, unscrewing the bolts. Remove the connection cable and peel off the sticker. Clean off any dirt and add oil;

• Noise emanating from the power supply is the most common cause of deviations. The main difficulty is that it is necessary to disassemble the block body. First of all, unscrew the 4 bolts holding the power supply together with the case (do not confuse it with the cooler mounts). Then carefully remove it and unscrew 4 more bolts connecting the 2 parts together. Now unscrew the fan itself. Clean it with a brush and lubricate it.

1. Carefully clean the system unit from dirt in other places, otherwise the cooler will soon clog again;
2. Now reassemble and connect everything back;
3. You can start your computer and enjoy quiet operation.

There is such a nuance here that a lot of used oil can accumulate inside the cooler itself, which thickens and blocks its free movement. Then you will have to completely disassemble and clean the fan by prying the small clip in the hole under the sticker.

On a laptop, everything is ambiguous, since each model has distinctive parsing methods. In order to get to the cooler, it is better to look at the corresponding disassembly instructions, and cleaning and lubrication occurs in the same way as on a PC.

How to reduce the speed in the cooler?

If the cooler in a laptop or desktop computer is noisy, then simply reducing the speed may come in handy.

The easiest way is to go into the BIOS and set the Q-Fan Mode value to standard. You can also use reobass, programs, for example, SpeedFan. The use of a reobass is rarely justified, since you will have to reach for it all the time, but you can adjust the speed at any time. The application makes settings directly from Windows.

Take care of your computer and it will work long and efficiently!

If you still have questions on the topic “Why is the cooler noisy and what to do in this case?”, you can ask them in the comments

Hello everyone, my dear friends and guests of my blog. Today I want to tell you how to reduce fan noise in your computer. in simple ways. The loud noise a computer makes when it boots up causes a lot of inconvenience to a large number of its users. Exposure to constant irritating sounds can negatively affect the human nervous system.

Besides extraneous noise from the system unit indicates internal problems. Most likely to emit extraneous noise will be installed on the power supply, central processor, or graphics adapter fan. It is also called a cooler, and its main and only task is to remove excess thermal energy from the corresponding component computer system.

A slight uniform noise is normal during operation, so do not pay attention to it. But with a sharp metallic noise, you need to look for the source of the problem.

But before you ooh and ahh that your part is faulty, open the computer case and look inside. It’s possible that one of the wires just randomly touches the processor or video card cooler, so you can hear an unpleasant crackling noise.

Ways to reduce fan noise

Coolers modern computers, having a high degree of performance, operate at very high speeds to effectively remove excess heat. This is the main reason for the noise from the system unit. home computer. Reducing the noise emitted can be easily achieved by reducing the speed of the coolers. It is necessary to take into account that processor and graphics card coolers directly cool the sponsored parts. But the power supply fan, in addition to the unit itself, also cools the entire computer case.

Changing the cooler speed is available in several ways.

Sometimes this can be done through the BIOS settings menu; this option is available when using more or less modern system or graphics cards, but in the absence of this option it will be necessary to fine settings the board itself.

Changing noise in BIOS

IN different versions The BIOS fan volume setting is determined by a setting whose name contains the word “CPU Fan” (translated as CPU fan). And depending on the system version, you will need to set certain values.

ASUS

In the BIOS from ASUS, for example, you need to select the menu “Power” - “Hardware monitor”, and then set CPU values Q-Fan Control and Chassis Q-Fan Control on Enabled. Only after this a new line will appear CPU Fan Profile, where you can set the mode from the quietest (Silent mode) to the most productive (Perfomance mode). Well, the Optimal mode, as you already understood, is something between loud and quiet.

Award

In this version, you need to select the “PC Health Status” item, and then set the “Smart Fan Control” item to Enabled. Usually it is always on, but if you reset the BIOS settings, it is automatically disabled. Therefore, many people are perplexed when there is a sharp increase in operating speed, and therefore noise.

But remember! You can reduce noise only as long as it does not harm the insides of your computer. Check it out. If, due to noise reduction, it has become higher than normal, then return everything as it was and look for the cause elsewhere.

Change using the program

In addition to BIOS, can come to our aid third party program. In this regard, I recommend that you use the program Speed ​​Fan. It is small, convenient, functional and free. You can download it from here.

Initially, the program English language, but you can easily change it to Russian. But in fact, this is not necessary, since we need to find only one small column where the items “Pwm” are present. This is the fan rotation speed. If the value is at 100 , then accordingly they will work on full power. Well, if you reduce the value to 50 , then you will see for yourself that it has become quieter.

During operation, the noise produced by the fan will only increase. This is due to dust and foreign particles entering the structure. In addition to the fan blades, dust settles on the cooled components themselves, worsening the thermal energy efficiency. Fans with automatic adjustment As the temperature rises, operating speeds will themselves increase the frequency of the cooler. After the temperature drops to acceptable standards, their speed will decrease.

Methods to physically eliminate fan noise

Elimination of noise from computer coolers can be achieved by periodically cleaning the entire internal surface of the system unit, printed circuit boards and components. Large amounts of accumulated dust can be removed using a regular hair dryer. After blowing with a hairdryer, you need to wipe all the boards from any remaining dust with a soft brush. By the way, to remove fatty deposits, it is recommended to dip the brush in technical or medical alcohol.

The next step in the fight against noise will be to lubricate the fans. The oil used in sewing machines is good for this purpose. If there is no result and the noise persists, it is necessary to conclude that the bearings that ensure rotation of the fan are worn out. In this case, it is recommended to replace them with new ones.

Of course, sometimes these methods may turn out to be useless, then you have to “play Kulibin”, namely, reduce the voltage in the cooler itself or poke around in the wires. But personally, I would not recommend that you try such experiments on your own. It’s better to turn to knowledgeable people who really understand this.

Well, that's all for me. I hope that my tips helped you. Therefore, if you have not yet subscribed to update my blog, I highly recommend that you do so. I'm waiting for you again. Good luck to you. Bye bye!

Best regards, Dmitry Kostin.

Parts. This could be an active cooling system with fans, a hard drive - hard disk drive. It usually works very quietly, but if its sound annoys you, you can change it to Solid State SSDs. This will significantly increase the speed of the sub-disk system.

If everything is fine with your hard drive, this means that the source of the noise is the cooling system fans.

Ways to reduce noise from PC coolers

Noise can be eliminated in a number of ways:

Reduce CPU load;

Replace the cooling system;

Forcefully reduce the rotation speed;

Replace small coolers with larger ones;

Lubricate the fans;

Check fan settings;

Clean the radiator from dust and dirt.

How to remove noise

The more loaded CPU, the more heat it generates and the harder its fans work. And if the program on the computer also freezes, then the load increases further. To fix the problem, just close the frozen program.

If you replace the cooling system with a liquid one, you can improve heat dissipation. Moreover, during their operation, you will only hear the sound of the pump running and flowing water.

Exist special programs to reduce the rotation speed of coolers. One of the most popular is SpeedFan. It is good because it can control the fan speed automatically.

The larger the fan impeller, the better effect cooling it provides. At the same time, the number of its rotations is less, and, accordingly, the noise of the computer is reduced. Bearings in fans are also different. Among the two types - rolling and sliding, it is better to choose the first option, since it is more stable in producing sound effects.

Sometimes just lubricating the fan is enough to make it run quieter. Sewing machine oil is suitable for these purposes. If you want to lubricate the CPU cooler, pry off the sticker that is stuck on the bearing. Add some oil there and glue it in place.

The fan setting is very easy to check. You need to go to Computer BIOS and check if the Smart Fun Control options are enabled in the PC Health Status section. Depending on the type of motherboard, the name of the function may vary. It must be enabled, that is, have the Enable status.

If a lot of dust has accumulated on the radiator, this disrupts the operation of the system and the fans have to work with double force. To clean them, there are special cans of compressed air, which can be purchased at a specialized store.

Knowing ways to reduce computer noise will help you easily deal with this problem. But if your device makes a sound like a squeak or whistle, then your PC needs replacement components. Monitor the condition of your computer or laptop and troubleshoot problems in a timely manner.