I own a Big Red PC which seems to have a noisy fan. The deal is that as the temperature rises there is a whining noise, then as time goes by the casing starts to vibrate, and the end sound is almost like a motorbike. The fan is a nydec DC 12V 0.42A. Is this likely to be the fan, and are nydec fans reliable? Is there anything I can do to reduce the noise? Is there any other fan I can use?