The fan in the computer power supply is for the cooling system, prevents overheating of its elements and possible failure of the computer. Each part has its own life, i.e. your life, and eventually, when you turn on your personal computer, you can hear only silence. This means that the fan stopped spinning. This can happen for a number of reasons.

The main types of failures of the cooling fan power supply include: contamination, foreign object, grease, mechanical failure, power supply wire.


The most common reason for stopping the fan is mechanical pollution. In the system unit continuously pumped the air and dust contained in it, over time settles on the elements of the fan.
The system unit includes all the primary devices of reception, transmission, processing and storage of information.

In the end, it becomes so much that it prevents the rotation of the blades. The easiest way to remove dust is to vacuum with a vacuum cleaner tube to the opening of the air intake. However, such cleaning will help for a while. Better to disassemble the computer and clean the blades and other components, removing mechanical impurities.

Foreign object

In spite of that filters into the opening of the air intake can get a small object – a paper clip, pieces of broken pens, coins, screws. The cause can be ascertained and resolved only after disassembling the system unit. In addition to simple to stop the unit foreign object may lead to breakage, which is the next reason for failure.


Fan, like any mechanism in need of lubrication. Over time it needs to be updated. Without lubrication the bearings overheat and do not provide sufficient speed. Prevention is the grease on the mechanisms of the fan.
As a lubricant for bearings of the fan use a synthetic engine oil.

Mechanical failure

Mechanical failure may occur due to hitting a foreign object or if the fan is defective or old and worn out. Any material has its own life and dynamic load changes shape or breaks. Why any fan may eventually form a crack or bent blades. In this case, will only replace.

The power cord

Often when the computer moves due to the shake or for self-disassembly of system unit can move away from the contact wire feeding the fan. So that it stops working from lack of power. In this case, help visual inspection of the fan wiring.