Tonight, I took the laptop apart to replace the fan and the OEM fan has four wires: red, black, yellow, and blue. The replacement fan I bought only has red, black, and yellow. I tried googling, but ...

OK, it's embarrassing that I don't know how to do this but...<P>(feel free to point and laugh, as long as you also answer my question)<P>The CPU fan on my Athlon T-Bird has started making a soft, high ...