1, too much dust clogging too much dust accumulation of cooling fan caused by clogging.

Solution: Man-made solution: use vacuum cleaner to suck off the dust on the panel, power supply, radiator, etc., and then wipe the inside of the chassis with a rag dipped in a little alcohol, put it in the air vent to dry it out, and finally reassemble it. Manufacturer's technology: a. Design, the outer frame where the motor is mounted, raised, so that the motor sinks, reducing the spacing between the stator and rotor, reducing the entry of dust. b. The use of double ball bearings, the ball has a certain degree of dust-proofing ability, the bearings are not easy to serious interference. c. The use of double ball bearings, the ball has a certain degree of dust-proofing ability, the bearings are not easy to serious interference.

2, cooling fan shaft rust

Computer fan used for a long time, there may be a fan shaft rusted.

Solution: After disassembling to see the computer cooling fan, the lubricant (available sewing machine oil instead) drops in the fan bearing, and finally reassembled.

3, cooling fan fan blade eccentricity

Cooling fan fan blade eccentric, may be the fan screws loose!

Solution: disassemble the computer fan, reassemble it again, pay attention to the fan screws tightened, so as not to reoccur in the case of loose fan, and finally reassemble the host.

4, CPU temperature is too high (in the absence of the above three problems)

Thermal oil condensation and the CPU generates space, causing the CPU temperature rises, the fan speed up, the fan will make the sound, the solution: first of all, the fan and the CPU out, look at the surface of the CPU or the fan cooling fins on the thermal oil is not condensed, if condensed, it is recommended to scrape off the re-replacement of the thermal oil to try, if the noise still exists, boot the computer with the software to see if the temperature of the CPU is too high (generally) In 35-45 degrees) and fan speed, if the CPU temperature is normal or not that is the fan itself.

5, the cooling fan touches the wires

Solution: open the computer chassis, carefully check its wiring, the computer fan touched the wiring reorganization, and then reinstall the computer back.

6, after-sales service or find a professional to deal with

If the above problems do not exist, it should be the fan itself, we need to find after-sales service directly to help deal with or find professionals to deal with.