My computer has started to make a lot of noise on start up and I think that it is the fan. I have been looking at fans, but I really do not know where to begin! My cpu is AMD FX-4170 Quad Core Processor, I think that info is needed, but I do not know which sort of fan or cooling system to get. Is there a way of finding out what it is in there at the moment? There seems to be some small copper pipes on it - does that mean that it has some sort of cooler on it? Any help would be gratefully received, as I do not want to get up one morning and find that nothing works!