Now I know that this isn't *technically* a windows problem but it is with my PC that has windows on it, and I didn't know where else to post it.

So I'm using an ASUS p5k mobo, and I'm using a CPU fan, and two case fans. These case fans are suppose to have PWM control, and for explanation this is so that your mobo can have control over the RPMs of your fans. In my bios I have an option of turning PWM control of the case fans on and off, which is strange because my chassis fan plugs on the mobo do not support PWM, I have to jack them through my CPU fan plug, and it's all done as prescribed in the instructions. Now the problem is that the chassis fans run at such low RPMs as a result of this that it hurts. The CPU fan still responds to the PWM control by running at a speed that fits the CPU temp, but my chasis fans sit around 300 RPMS. So i turned off chassis PWM control in my bios, but it affects nothing, the only way to get good chasis fan speed is to turn off the CPU control, which then takes control of the cpu fan away. Anyone have any ideas on how to fix such a problem? If you need to take a look at the wiring of it to figure it out let me know and I'll open her up for ya.

Thanks.