What is the reason why the computer host fan does not spin?

Reasons why the computer host fan does not rotate: 1. The fan accumulates too much dust. You need to wipe the dust on the fan with cotton swabs or paper; 2. The fan shaft is rusty. You can apply some lubricating oil on the shaft. ; 3. The computer motherboard is damaged and needs to be repaired by professionals.

The operating environment of this tutorial: Windows 10 system, Dell G3 computer.

Why does the computer host fan not spin?

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

1. The fan accumulates too much dust.

After the computer has been used for a long time, the fan inside will easily accumulate dust, and excessive dust accumulation will cause the fan to stop rotating. At this time, we need to wipe the dust on the fan with cotton swabs or paper.

2. The fan shaft is rusty.

Computers that have been used for a long time are prone to rust and failure of internal parts, and rust on the fan shaft will cause the fan to fail to rotate. In this case, we can disassemble the computer fan and apply some lubricating oil on the shaft. (Generally, use a straw or tweezers to dip a drop of lubricating oil on the axis. Not too much, and cooking oil must not be used.)

3. The computer motherboard is damaged.

Computer motherboards involve many components, and damage to the motherboard may also cause the computer fan to stop spinning. If the fan stops rotating due to damage to the motherboard, it is best to take it to a professional for repair.

Main performance of the fan

Angle and bearing system. Generally, the fan speed is indicated on the radiator manual. Generally speaking, 30% of the cooling effect of the radiator depends on the speed of the fan. But the higher the fan speed, the better. The correct fan speed should be determined based on the heat generated by the CPU.

The selection of fan speeds of different specifications should be distinguished. The basic principle is: on the premise of generating the same air volume, the larger the fan, the lower the speed and the smaller the noise. Generally, it is 3500 The speed between 5200 rpm and 5200 rpm is more conventional.

The greater the power, the stronger the fan wind force and the better the heat dissipation effect. The power of the fan is directly related to the speed of the fan, which means that the higher the speed of the fan, the more powerful the fan will be. Generally, the fans sold in the computer market are DC 12V, and the power ranges from 0.

We cannot one-sidedly emphasize high power. It only needs to match the power of the CPU itself. If the power is too high, not only will the cooling effect not be greatly enhanced, but it may increase the workload of the computer and ultimately shorten the time. CPU and fan lifespan. Therefore, when selecting the CPU power, you should consider "heat". And the opening in front of the fan should always be kept clean to avoid obstruction.

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

In addition, the guide grooves on the surface of the radiator should be denser, which can ensure that the radiator has a larger contact area with the air, thereby enhancing the heat dissipation effect. Generally, computer enthusiasts will install a water-cooling fan for the CPU if the economy allows it to achieve a rapid cooling effect through the circulation of liquid.

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