Why do PCs have fans?

The sole function of computer fans is to cool the system by drawing colder air from the outside into the computer chambers and components, mainly, the CPU. In some computers, you will find the fan as a component of its power supply where it is performing its cooling function.

Do PC fans always spin?

Depends what you have it plugged into. If you have one of the main power connectors from your power supply plugged into it, it should spin constantly. Check what it is plugged into. If it is plugged into a mobo header and it’s not spinning, try another header.

Why do my PC fans stop spinning?

If your CPU fan does not spin, the issue could be anywhere from the fan, the motherboard, to the power supply unit. The fan can get clogged with dust and lint hence preventing it from spinning. It is therefore alarming when you notice that your CPU cooling fan is not spinning.

What happens if computer fan stops working?

CPUs with dead fans will overheat. The CPU can get so hot it will ignite, destroying itself beyond repair. A fried CPU can also take down the motherboard and other connected components with it when it goes. The CPU will break if the computer is continually used with a dead CPU cooler fan.

How do you fix a computer fan that will not spin?

Fixing the PC Case Fan Not Spinning Error:

Solution 1: Power Cycle your Computer.
Solution 2: Clearing Debris and Dust with Compressed Air.
Solution 3: Remove Debris from the Fans.
Solution 4: Reset/Flash your BIOS.
Solution 5: Replace the Fan.
Solution 6: Examine and Replace the Motherboard.

Why does my computer say CPU fan error?

What Causes CPU Fan Errors? A CPU fan error on start-up is typically due to physical damage to the fan, incorrect settings, or external factors causing the computer to overheat and force the fan to run at unusually high speeds. Dust or other objects obstructing the device’s air vents can also cause CPU fan errors.