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Hi there, it looks like a mere dust buildup. As your computer draws in air, it also draws in particles. These "dust bunnies" stick to the parts that are designed to cool down your computer. The fan is just working overtime so it can compensate for the heat insulation. It shouldn't be a bother but feel free to open the case and use either your lungs or a can of spray air to clean out the internals. GMAC |