A noisy computer fan can be a persistent annoyance, disrupting your concentration during work, ruining the atmosphere while watching movies, or breaking your immersion during gaming sessions. The constant hum, whir, or even rattling from inside your PC is more than just a nuisance-it often signals underlying issues with your computer’s cooling system or hardware. Fortunately, there are many effective ways to reduce fan noise, ranging from simple cleaning to advanced hardware upgrades. In this comprehensive guide, we’ll explore the root causes of computer fan noise and provide actionable solutions to help you achieve a quieter, more enjoyable computing experience.