A CPU cooling fan is an essential component in any computer system, ensuring that the processor remains at a safe operating temperature. Without proper cooling, the CPU can overheat, leading to system instability, reduced performance, or even permanent hardware damage. Knowing how to repair a CPU cooling fan can save you money, extend the lifespan of your computer, and maintain optimal performance. This comprehensive guide will walk you through the process of diagnosing, repairing, and maintaining your CPU cooling fan, giving you the confidence to tackle common issues on your own.