Why would you want to turn it off, isn't that a good feature? Wouldn't you agreeComputergen said:NO! None of you are understanding!!!!!! I had this problem. Its a feature of Athlon 64's called Cool N Quiet. It turns on the heatsink fan based on temperature of the cpu! You have to make sure its disabled in the BIOS. That way the CPU Fan will be on at all times the computer is!