The computer is not hot, and the fan keeps spinning

1. Fan heat sink.

Blocked, the heat dissipation capacity is very low, the temperature of the laptop is high, and it keeps turning.

2. There is a problem with the temperature sensor of the motherboard, which leads to the wrong temperature of the detection, so it keeps turning.

3. The switch chip of the fan is broken and has been turned on, so it turns when there is power.

6. There is no problem with the fan all the time, and it will not damage the notebook. As long as the temperature of the laptop is not too high, it will be fine.

1. If the fan does not rotate when the power button is pressed to turn on, it is recommended to enter "Lenovo Commercial Key Customer**", click "Expert **Service" to consult an engineer for repair, or click "Make an appointment for maintenance" to self-service repair equipment.

2. If the fan is rotating when the machine is turned on, and the fan does not rotate during use, please confirm whether the computer will crash or automatically power off during use. Because the current computer has a temperature control function, the fan operation is intelligently adjusted according to the actual needs of the fan control system, and if the set temperature is not reached, the fan will not rotate.

Reason 1: When our computer is very hot, the fan still doesn't start to dissipate heat to cool down, and it only turns when we turn it on. The reason is that the cooling fan of the computer is mainly for the computer CPU

Cooling, and the back panel of the computer is not only the CPU will heat up, it may be that the temperature of other accessories is too high, such as the computer hard disk.

Graphics cards, motherboards, etc. Here's a way to test if there's a problem with the cooling fan, that is, if we open a large game with high CPU requirements, if the cooling fan still doesn't work, it's the failure of the fan itself. Reason 2:

Laptop.

The more you use it, the slower it gets, and there are problems such as crashing and restarting for no reason, the body temperature is too high, and you can't hear the sound of the cooling fan working. The reason may be that the cooling fan of the laptop did not meet the standard when it was installed, and the installation was unqualified, so the cooling fan could not operate normally. We can remove the cooling fan of the laptop and reinstall it.

Reason 3: The computer can turn on normally, but it will shut down after running for a while, and you need to wait for a while before you can continue to turn it on. This may be due to a foreign object that is obstructing the permeability of the cooling fan or fan duct.

Therefore, the CPU temperature of the computer is too high, and self-protection is turned on, causing the computer to shut down automatically. At this time, we can take the notebook apart and remove the foreign matter. Reason 4:

The CPU cooling fan does not rotate when it is rotating. However, the temperature of the computer itself is relatively high. The reason is that the CPU temperature of the laptop has not yet reached the temperature at which the cooling fan works.

The average laptop is above 70 degrees Celsius.

The cooling fan will work. This answer applies to most computer models such as the Dell G15.

Summary. 2. The fan shaft is rusty. Take the fan apart and apply some pomade to the top of the hinge. Generally, dip a straw or tweezer into the lubricating oil, and drop a drop of lubricating oil in the shaft, not too much, and be sure not to use edible oil.

What is the reason why the computer fan is not turning.

1. First of all, you should consider whether the fan is broken, if it is broken, you can only take it to repair or replace one.

If the fan is normal and does not rotate, there may be three situations: 1. Too much dust has accumulated in the fan. When cleaning, remove the fan from the heat sink, open the bottom oil seal, wipe them off with a cotton swab or paper, or use a wooden toothpick to slowly wipe off the dust.

2. The fan shaft is rusty. Take the fan apart and apply some pomade to the top of the hinge. Generally, dip a straw or tweezer into the lubricating oil, and drop a drop of lubricating oil in the shaft, not too much, and be sure not to use edible oil.

3. Motherboard reasons. The less minor is only the damage to the power supply transistor, and the complex involves many components, such as the temperature control circuit. If there is a fault in the relevant circuit during IBM notebook repair, for example, there is a problem with the temperature monitoring circuit of H8, a fan error error will be reported.

At this time, it can only be sent to a professional repair shop.

The reasons why the computer fan does not turn are as follows:

First, the fan has accumulated too much dust.

After a long period of use, the fan inside the computer can easily accumulate dust, and too much dust will cause the fan to stop rotating. At this time, we need to wipe the dust off the fan with a cotton swab or paper.

Second, the fan shaft is rusty.

Computers that have been used for a long time are prone to rust and malfunction of internal parts, and a rusty fan shaft can cause the fan to fail to rotate. In this case, we can take the computer fan apart and apply some lubricating oil to the hinge. (Generally, use a straw or tweezers to dip a drop of lubricating oil on the shaft, not too much, and you must not use edible oil.)

3. The computer motherboard is damaged.

There are many components involved in a computer motherboard, and damage to the motherboard can also cause the computer fan to not spin. If the fan stops turning due to damage to the motherboard, it is best to take it to a professional for repair.

The main performance of the fan

Angles and bearing systems. In general, the speed of the fan is indicated on the manual of the radiator. Generally speaking, 30% of the heat dissipation effect of a radiator depends on the speed of the fan.

But the higher the fan, the better. The correct fan speed should be determined based on the heat generated by the CPU.

The basic principle is: under the premise of generating the same air volume, the larger the fan, the lower the speed, and the noise will also be smaller, generally between 3500 rpm and 5200 rpm is more conventional.

The higher the power, the stronger the fan and the better the heat dissipation. The power of the fan is directly related to the speed of the fan, that is to say, the higher the speed of the fan, the more powerful the fan. Generally, the best fans in the computer market are DC 12V, and the power varies from W to W, so the power needs to be selected according to the heat generated by your CPU.

If the power is too large, not only will the cooling effect not be greatly enhanced, but it may increase the workload of the computer, and ultimately shorten the life of the CPU and fans. Therefore, when choosing the power of the CPU, you should measure the "heat". And the opening in front of the fan should be kept clean at all times to avoid blockage.

A better radiator will not have burrs on the edges, no deformation of the heat dissipation fins, smooth bottom without cracks, neat appearance, generous shape, warranty, anti-counterfeiting marks or other characteristic trademarks, etc. In addition, when choosing a radiator, you should also pay attention to the bottom of the radiator should not be too thick, because the thermal conductivity of aluminum is not very good, and too thick will affect the transfer of heat.

In addition, the deflector groove on the surface of the radiator should be denser, which can ensure that the radiator can have a large contact area with the air, so as to enhance the heat dissipation effect. Generally, computer enthusiasts will give the CPU ** water cooling fan when the economy allows, and achieve the effect of rapid cooling through the circulation of liquid.

The reason why the fan does not rotate is that there is a problem with the fan itself and needs to be repaired or replaced.

Some fans are passively rotating, only when running under high load, you can open a large game or software, test, whether the fan is rotating, if it still does not move, the fan itself has a problem, repair it in time.

What to do when the computer fan doesn't move:

1. You can try to adjust the power settings of the notebook, and set the hard disk and screen of the notebook to turn off when not in use for a period of time.

2. Close the laptop and let the computer rest.

3. Put the notebook in a well-ventilated place.

4. Clean the fan.

5. Use a diagnostic tool to test whether the laptop's fan is working properly.

6. Upgrade the BIOS of the notebook.