Re: Noisy fan. Driving me wild
You system might be running hot and be in need of a good cleaning. As the system gets warm, the fan speed increases. The increased airflow cools the system which then reduces the fan speed. If the system has been running warm for extended periods of time, it may have caused the thermal grease between the CPU & heatsink to dry out. In that case, remove heatsink, clean off old thermal grease, apply thin layer of new grease, reinstall heatsink.