Why does the processor on my computer get very hot? Trouble. The laptop still gets warm after cleaning and replacing the thermal paste. What should I do again? The processor is heating up; replacing thermal paste did not help.

The breakdown may look something like the following:

The laptop will work for a while and turn off(from half an hour to a whole day without visible problems).
If you conduct an independent express diagnostic (stress test with temperature monitoring), it becomes obvious that the laptop is overheating and preventative cleaning and replacement of thermal paste is necessary, but the cleaning was carried out quite recently (even if, most often, not by professionals). Let's try to figure out why this might happen.

Laptop cooling system design (described in more detail):

a copper heat pipe ending with a heat sink that is in contact with the surface of the central processor on one side;

on the other hand, it is integrated into the radiator (with metal fins);

A cooler for active airflow completes the design. Additional heat sinks can be used for the video card or chipset, which are in contact with their surface through thermal pads.

Here are some of the most common reasons why a laptop turns off even after cleaning from dust and replacing thermal paste:

To achieve a guaranteed result - reducing the temperature of the processor (chipset, video card) when overheating, contact reliable companies. Only a professional service can guarantee the effectiveness of such a procedure as

A little background...

Why didn’t I immediately buy “normal” thermal paste...
It all started when I encountered a problem with my laptop (Fujitsu Siemens AH530) overheating. My favorite game Call of duty: Modern warfare 2 started to slow down terribly. It had picked up quite a bit of dust and I bothered to clean it. After several cleanings (about every few months). Someone told me that when cleaning it is almost mandatory to change the thermal paste. I didn’t listen and only cleaned the turbine and blew out the radiator fins, and once again cleaning the devil pulled me to remove the entire cooling system to change the thermal paste. I carefully cleared the “stones” from the old one, went to the store to buy a new one, which was not there... I was simply shocked... I went around to several computer hardware stores and none of them had it. Since I carried out all these actions after work, I didn’t make it to all the stores before they closed... Remembering everything the world stands on, I headed home.
The next day, in one of the stores, I found Titan Nano Grease (TTG-G30030) at a particularly inflated price ($9.18, instead of the proper $4.04).
There was nowhere to go, and I don’t really understand the prices of thermal paste... I bought it...
After using the laptop for a short time, I noticed that it was working much worse than before changing the thermal paste... I cleaned it thoroughly, blew out the dust, re-smeared the “stones” with new thermal paste... It was all in vain...

Now the point

I won’t say that the heating was critical, but at some moments the laptop simply went into defense. For example, when hibernating or video editing. Temperature tests showed everything was normal. (60-80 degrees Celsius, as in the reviews on the Internet and as it has been since the purchase). The cooler only worked harder, from which we can conclude that at critical moments the “stones” quickly heated up and it simply did not have time to cool.

I was tired of putting up with the inconvenience and decided to look for information about thermal pastes, because... Logically, that was the whole problem. Wandering around the Internet I found an article: “Thermal paste test from a laptop’s point of view”
According to which I read that the best results are given by two of the thermal pastes tested: Arctic Cooling MX-4 and Coollaboratory Liquid Pro. And, since Coollaboratory Liquid Pro is conductive, I decided not to take risks with it, for fear of causing a short circuit in the laptop, and settled on the Arctic Cooling MX-4 (although I had to wait several days for it to arrive, since our computer stores have everything but not what is needed). I practically didn’t overpay for it ($12.11, instead of the due $10.16).

About the thermal pastes themselves.

Titan Nano Grease (TTG-G30030) - 3g tube, actually liquid, snow-white color, thermal conductivity: 4.5 W/(m K)
Arctic Cooling MX-4 4g (ORACO-MX40001-BL) - 4g tube, medium viscosity, gray color, Thermal conductivity 8.5 W/(m K)

Arctic Cooling MX-4 in person:


Sorry for the low-quality photo (the serials have been erased). It was not possible to apply it more evenly, my hands are growing from the wrong place... Now you see why I was afraid of the short circuit (the surface of the chips is simply strewn with dangerous places that just ask: “short-circuit me”).

I degreased the surfaces with glass cleaner (or, simply put, alcohol-based Mr. Muscle), wiped it dry, and casually applied new thermal paste. Do not touch the surfaces with your fingers - you will lose several times the cooling efficiency. If you touch it, degrease it again.

Temperature tests, as you understand, do not make sense - it is the same as it was, because it is controlled by electronics. The only difference is in the intensity of the cooler's operation (about doubled), and temperature jumps have become smoother.
The Titan Nano Grease paste itself is quite good, considering the price, and if not for the small contact area between the processor and the radiator, it would be enough.

My conclusions

Diagram for clarity:

It should be understood that thermal paste is in no way a coolant itself - it only transfers heat from the stone to the radiator, this property is determined by the W/(m K) characteristic. The higher the number, the faster it transfers heat (unless the manufacturer, of course, cheats with the numbers). If the “number” is insufficient, then the stone will heat up faster than cool, i.e. faster than the thermal paste will transfer heat to the radiator.

Sorry for the primitiveness, thanks for your attention. I hope this article will really help someone in solving problems with overheating of their favorite laptop.

Have a nice day everyone! In this article we will continue to discuss the question of what to do if the laptop still heats up after cleaning and replacing the thermal paste. It would seem that everything has already been sorted into pieces, but no.

Unfortunately, we must state the fact that even complete disassembly of the laptop sometimes does not lead to the desired result. And there are objective reasons for this, which sometimes lie right on the surface.

The most offensive problem may be a simple loose screwing of the bolts on the contact plates. As a result, heat dissipation from the surface of the processor or video chip can significantly deteriorate.

In such a situation, even new thermal paste will be completely ineffective. But let’s still leave this moment for later, and immediately try to look for more banal ways to solve the problem:

So, the first thing you need to pay attention to is the surface on which our heating laptop is installed. Perhaps it is located on some kind of blanket or shag carpet.

Naturally, such conditions will impede the normal flow of cold air that enters the housing through the holes in the lower part. Also, this state of affairs can negatively affect the exit of warm air through the side honeycombs.

The second point that is worth paying close attention to is under what conditions our device begins to overheat: in normal mode or.

And if the temperature rises only when running any heavy applications (games, graphics packages), then this can again be attributed to malfunctions of the already cleaned and serviced cooling system:

This is due to the specific location of the ventilation holes on the laptop body, which are usually found on the left side. And a single propeller on such a stand will most likely be located in the center.

But if the laptop case gets very hot even when simply browsing pages on the Internet or, then you should look at all the processes running in the Windows operating system. This is done by pressing the keys simultaneously Ctrl+Alt+Del:

Next, in the "Task Manager" you should pay attention to applications that consume a large amount of processor resources. Perhaps it is even one that does its dark deeds and consumes the power of the laptop.

If you still find applications that really put a lot of load on the processor, you can try to remove such a task by right-clicking on the desired item:

If the situation has not changed for the better and all the points indicated in this article have been completed in full, it is still worth contacting specialized specialists who, for money, will be able to figure out why the laptop is heating up after cleaning and replacing the thermal paste.

And at this point our story comes to an end, if you have any questions, ask them in the comments. Now you can relax and watch a very interesting video about cool tricks.

While a laptop is operating, its electronic components consume electricity, a certain percentage of which is converted into heat. As the power of the processor and video card increases, the internal space of the laptop heats up more.

The problem is quite common, so it is important for every laptop owner to know what to do if the laptop gets very hot and turns off.

Cooling system design

The heat dissipation system is tightly adjacent to the processor and often to the video chip. It consists of copper tubes that conduct heat to a grille, which is blown with air from a fan and, as a result, cools, thereby lowering the temperature of the processor and other nearby components.

The distance between the cooling grille plates is extremely small; therefore, dust quickly fills the space between the fins, forming felt that interferes with the passage of air.

The tight fit of the copper cooling plate to the processor or video chip is ensured by thermal paste and thermal pads. A thermal pad is an elastic band that fits tightly to two surfaces. The absence of thermal paste or thermal pad will create an air gap, which will reduce the effectiveness of the cooling system.

The processor itself has a flat surface to which a copper cooling plate adjoins. The video chip also has the same smooth surface.

To ensure that there is no air between the copper plate and the processor, a layer of thermal paste is applied. Thermal paste levels out uneven surfaces of the processor and cooling system, creating the necessary fit and ensuring excellent heat transfer between them. The thermal pad also performs the same function.

Signs of overheating

There are many signs of a significant increase in laptop temperature, depending on which part is susceptible to overheating, so let’s look at the most common ones:

• The laptop turns off unexpectedly. The system of protection against excessive high temperatures is responsible for turning it off, so after turning off the computer, it is recommended to turn it on and go into the BIOS, where you need to monitor the temperature parameters of the base components of the laptop computer, if possible;
• periodic freezes and reboots. Most likely, the problem lies in the excessive heating of the video card. An additional factor may be picture distortion in gaming applications and the appearance of so-called “artifacts”;
• The laptop is making a lot of noise. If the fan is noisy, then the cooling system should be cleaned or completely replaced;
• hot body. If the laptop computer case is significantly overheated, you should seriously think about fixing this problem. Often a hot case is combined with loud fans. Cleaning the fan and cooling system completely if the laptop case gets very hot is simply necessary - otherwise the device may cause burns;
• If files are slowly being read from the hard drive, or reading data is impossible at all, you need to focus on the temperature of the hard drive.

Video: Getting very hot

Causes and solutions

There are several main reasons why a laptop overheats. Each of them has its own effective method for resolving the problem when the laptop gets hot.

Dust

The most harmless and common cause of laptop overheating is common dust. Over time, it clogs the ventilation grille (in extreme cases, the thickness of the dust layer can reach a centimeter), and significantly impedes the access of cold air through the grille.

Restricting the supply of cold air inside the laptop leads to significant heating of the processor, video card and other components.

Signs of this cause include random shutdown of the laptop computer after a certain period of time (usually from 10 to 30 minutes), decreased performance, and noise when the fan is running. These signs are especially pronounced in the summer heat.

To eliminate this problem, you should clean the cooling system of dust. An ordinary household vacuum cleaner can be an excellent assistant in this matter.

Thermal paste has dried out

Another reason for your laptop to overheat is when the thermal paste dries out. This reason is more rare than the previous one, however, the thermal paste drying out and the thermal pad becoming unusable happens quite often.

In general, liquids transfer heat well, which is why water cooling is more effective than air cooling. As the paste dries over time, the percentage of liquid in it decreases, which means the cooling efficiency decreases, although not significantly.

The situation is different with the thermal pad. When the thermal pad wears out over time under high temperature exposure, it develops compact micro-tears, which cause its ability to transfer heat from the processor to the cooling system to decrease.

The symptoms are similar to those of a dusty vent. To eliminate these difficulties, it is recommended to replace the thermal paste and thermal pad.

Failure

If, after cleaning and replacing thermal paste, when the processor load is less than 25-40% in office applications, the processor temperature is more than 80C, then most likely there is a failure of the cooling system or board elements. In this case, it is most advisable to take the laptop to a service center.

Cooling systems

Over time, the cooling system no longer provides an acceptable level of cooling. The fans begin to spin less, and the axes of rotation shift. It often happens that the installed cooling system may not provide cooling under significant user loads.

To solve problems, it is recommended to change the components of the cooling system, or replace it entirely. The selection of optimal components and their installation is impossible without qualifications and experience, so you need to contact skilled specialists from a service organization.

Another way out of the current situation associated with overheating may be to purchase a stand with fans. By placing a laptop computer on it, you can achieve more significant ventilation of the case and, as a result, reduce the internal temperature of the laptop.

Board elements

The heat generated when the CPU or motherboard chip heats up is transferred to nearby nodes located on it. Under prolonged and significant exposure to heat, there is a possibility of microcracks forming at the soldering points of these components, which leads to significant heat generation and faster wear.

Why is overheating dangerous?

As the amount of dust increases, the effectiveness of the cooling system noticeably decreases, the laptop begins to actively heat up, and over time it may freeze or even overload.

But the worst thing is that overheating a laptop can cause damage to the following components:

Replacing a video chip or other components costs many times more than preventative cleaning of dust from your computer. You should make it a rule that if the laptop begins to switch spontaneously, it needs to be cleaned of dust.

How to check if a laptop is heating up

To determine what temperature is the maximum temperature for a computer, you can use the special program HWMonitor, which allows you to view all current, as well as maximum and minimum temperature values ​​for a specific period of time. Only the maximum values ​​will be of greatest interest.

Each device has its own maximum temperature, certain information can be found on the Internet, something is easy to find out experimentally, but usually a combination of several symptoms with clearly elevated values ​​​​in HWMonitor indicates that the laptop computer needs cleaning and prevention.

However, you should be aware that the temperature limit may vary for each model.

Video: Reducing laptop processor heat

Prevention measures

Typically, a laptop gets very hot due to dust and lint clogging the cooling system radiator, so a few simple rules will help avoid complications associated with its overheating:

• You should not place the laptop on soft surfaces while working, as they prevent acceptable cooling and fluff from the soft surface will soon clog the fan;
• Do not work in a room with a lot of dust;
• the lion's share of household dust is located at a height of up to 20 cm from the surface, so it is not recommended to work with a laptop computer on the floor;
• Periodic cleaning of the laptop from dust is necessary (at least once a year);
• Before purchasing a laptop, it is important to determine what it will be used for and choose the most suitable model specifically for this class of tasks. It's important to know that there are no truly gaming laptops.

Just a few simple rules can protect your laptop from failure or an unscheduled trip to the service center.

Overheating of a laptop computer can cause a lot of headaches, ranging from the well-known “blue screens” to the loss of important data and even direct damage to the motherboard or processor, and the user does not always understand why the laptop began to overheat.

Question: The laptop gets hot even after replacing the thermal paste

Good day gentlemen, I have a laptop from about 3 years ago.
As it was before: the cooler worked quietly, the laptop did not get warm when playing games. (I cleaned the dust from time to time and changed the thermal paste and everything was fine).
What happened: The laptop started to get warm when playing games, opened it, cleaned it, changed the paste. nothing changed. By the way, the cooler works normally and outputs heat so you can cook scrambled eggs. This didn't happen before. I was told that most likely this is due to old age and that I either need to clean the processor legs, or bend something else with a screwdriver and clean it, or unsolder something else. I would like to ask you what should be done in such a situation so that the laptop does not heat up.

Question: After replacing the thermal paste on the CPU, the video camera stopped producing an image

Hello people. I have a problem, after replacing the thermal paste on the CPU, the video camera stopped producing an image. In general, it all started like this. I decided to replace the thermal paste. I disassembled, replaced, reassembled, turned on - the monitor was blank, as if it was in standby mode. At first I thought there was something wrong with my memory. I removed the 2nd line, changed places, nothing. Then I connected the monitor to the video output on the motherboard itself and the image appeared. When switching to Vidya - empty. I tried to install the video card in another PCI, same story. People, what do you say? Is Vidyakha covered? But why? After all, I didn’t touch it at all when disassembling the computer. What else can you try?

Answer:

Message from Predator_ASU

That's it, I solved the problem. And this is how it happened: I decided to go in the opposite direction. At the beginning I changed the thermal paste on the processor. I took off the processor and on the contact area in one place I saw, like, a fingerprint, on the side of the processor, where I was holding it over the edge. I wiped it with a napkin and here’s a miracle, everything worked. Well, who would have thought, because Windows itself was loading, with another video card everything worked. I don’t know, in short, maybe it’s just a coincidence? In any case, thanks everyone

Well, actually the effect was like from bent or missing legs, it happens that the processor starts but does not work correctly with video or memory, depending on what the missing or bent leg was responsible for..
It's great that everything has been resolved!

Question: After replacing the thermal paste, the PC stopped turning on

After replacing the thermal paste, the PC stopped turning on.
When there is no processor in the socket (or there is, but is not latched), the fans rotate. As soon as I latched the socket together with the processor, the PC shows no signs of life at all. building a processor. The master (consulted with him) claims that there is a microcrack in the motherboard.

I connected another power supply and the result was the same.

Old hardware: female - ECS NFORCE3-A (1.0A);
- proc. I don’t remember but the socket is S754.

The system unit was lying idle in the attic (a worker was going there) and I promised to give it to a neighbor’s child (unfortunately his parents couldn’t buy it for him). He is all in anticipation, but I have the same situation.

Who knows - tell me.
Thank you.

Answer:

Off-topic:

Yes, everything there is so packed with shopipets.
and the guy’s legs seemed to be too tight, they couldn’t straighten them carefully, they broke off

Question: Problems with the video card after replacing thermal paste

Good day!

A couple of weeks ago I noticed a problem with the video: all games are running great, but for example, in BF4 this happens - the game is running great, but about once every 10 minutes the frameseconds drop sharply by half and stay at that pace for a minute or a minute and a half. Then everything returns to normal, but continues to repeat itself. Previously, cleaning the computer from dust (including the video card) without much disassembly of the components, and, just in case, by replacing the thermal paste on the processor, saved me from this trouble. A week ago these procedures did not help. After them, the fps began to remain stable around 60 (previously it was 80-110) and dropped to 20 almost every minute with freezes. I disassembled the video card, blew out the radiators until they were shiny, and replaced the thermal paste (I used KPT-8). I turn on the computer, try it, it seems like a miracle has happened - the FPS has returned to its place and doesn’t even think about falling. But this effect lasted literally for three days. Then everything returned to normal - a constantly low framesecond rate and sagging with slight freezes. Today I disassembled the video card again. There is at most 10-15 percent of the applied thermal paste left on the GPU. I was surprised and applied half a millimeter more. Everything remains in the same place: FPS is average and continues to happily drop from time to time to unacceptable values.

AMD FX-8320, Gigabyte R9 280, 16 Gb.

The temperature of the video card at idle is 76-79 degrees, and the same, interestingly, under load. Furmark's full-screen test at 1920*1080 without anti-aliasing produces an average of 23 fps.

Where to dig? Should I use a different thermal paste?

Answer:! It also got warm like that, although there is no miner, and everything is ok with cooling!

Question: The processor heats up after replacing thermal paste

Hello.
The situation is this: Processor Intel Core i3 540 (3.07GHz)
Cooler DeepCool Ice Blade 100 (with 2 fans 700-1000 rpm)
I took out the cooler to replace the thermal paste and clean it from dust, after replacing the paste it began to heat up to 65-70" and idle at 39-50.
Before replacing the paste, the temperatures were 29-37" at idle and 55-61" under load.
Thermal paste DRG-102, I have never had any problems with it since I applied it to the video card and its temperatures were within normal limits.
The plastic feet on the radiator mount are also intact.
Even in AIDA64, the CPU temperature value disappeared, but the CPU temperature values ​​of CPU1,2 remained.
What could be the reason?

Answer: andrei77731, May be. But you check not what kind of thermal paste, but how you applied it, and whether you fully fastened the cooling system. Because this is the only problem that comes to mind. If you have plastic latches, check that they are exactly latched as needed. If it's a frame, check to see if the radiator is stuck on it. And so on.

Question: After replacing thermal paste it turns off

I have a Lenovo G550 laptop. Today I replaced the thermal paste and cleaned the cooling system. Now the laptop turns off at the slightest load on the video chip. I used KPT-8 thermal paste. Help with advice.

Answer: I put a thermal pad on the chip, the result is the same. SOLVED by simply replacing the paste with arctic MX-2!!!
The temperature dropped by 15-20 degrees. I'm shocked!

Question: Acer Aspire V3-771 - turns off after replacing thermal paste and cleaning

I decided to change the thermal paste and clean it. I did everything using a video clip from the Internet, step by step.
After replacing it, I immediately started using the laptop, but after 3 hours of use it turned off.
then it just wouldn't turn on. I couldn't turn it off in the BIOS. after a while it turned on and worked again for about 2 hours, then it all happened again! After I managed to turn it on again, I installed the AIDA64 program, checked the temperature, everything was fine with the temperature. I checked the hard disk for errors, everything is fine and there are no errors.
I took the laptop apart again and connected everything correctly.
During disassembly, I didn’t drop anything on the board!
PLEASE TELL ME!

Answer: Acer Aspire V3-771

Added after 2 minutes
Acer Aspire V3-771
Yes, it doesn't overheat at all.

Added after 20 seconds
Acer Aspire V3-771
Yes, it doesn't overheat at all.