You can either purchase a quieter fan and install that, or not use applications that require a lot of the CPU.
clean it! if the fan is not working efficiently it will not cool the CPU.
clean it - take the side panel off and remove any debris, dust etc
clean it - run scan disk, run defrag, run a program to clean up the registry
remove any programs you are not using or save them to CD.
run defrag again.
your PC will run more efficiently and the fan will not have to work so hard.
john
Without further information, it is difficult to determine what is causing the sound. The most likely components are: Hard drive CPU Fan Case Fan Power Supply Fan.
The fan could be rusty and needs greasing
Make sure the CPU fan is functioning properly and that the case fan is also operational. If your CPU doesn't have a fan, purchase and install a heat sink and fan that will fit your CPU.
CPU fan is attached together with a heat sink on the mother board, CPU fan is used to prevent overheating of the processor on the motheboard
The fan will work - but it will spin constantly - as it would have no data to rely on to regulate the temperature of the CPU.
cpu fan speed of 3590 RPM normal(CPU 73c)
What does the CPU Fan connect to?
Neither, The CPU is the Central Processing Unit, it only processes information and bits of data the computer sends thru it. The motherboard supplies power to the case fan AND the CPU fan, which is supplied power from the PSU (power supply unit)
Computer cooling fan
on motherboards it a port that allows a fan to connect to it to cool a CPU/ Northbridge heatsink in bios PC health menu it registers the speed of fan to make sure the CPU ain't to hot and fan spinning maximum speed
PWM (pulse width modulation, which controls fan speed in order to reduce the overall noise in a system.
This message is generated by your motherboard's BIOS. The alert is referring to your CPU Cooler's fan which is located towards the top of your motherboard. There could be a smaller fan located in the middle section of your motherboard but that is your Northbridge chipset. It’s also possible someone has plugged in a case fan into your CPU fan header (the power plug for your CPU fan) so be sure to check your case fans as well.