"Tiny Cooling Fan" and louvers that place easy to stick gray, more gray, the weather is hot, it will affect the heat! Currently CPU is automatic temperature control! Different issues, CPU will control the fan speed! If you find trouble, you go another fan, the way to sit down dust books, have the effect of! The new machine, you can rule out the dust problem! 2:00 tell you: First, you need to call "Tiny Cooling Fan" customer service there, ask for an explanation. How should I say this way, the general sale and may not be ignored, because the quality of the books is not a hardware problem, the other party will not control the fan ring, it does not affect your normal operation, but you must fight! Secondly, you have to solve this problem, or to try to change the "Tiny Cooling Fan".