CPU fan error! ii

it that a question or statement?

Question because I don't know what I should do

did you plug in the cpu fan plug to the motherboard? it is spinning?

Yes it's plugged into the motherboard and it is spinning

3 pin or 4 pin?

My Asus P8Z77-V Pro has two CPU fan headers.

I completely disabled the "optional" CPU fan alert, (Because I'm not using one now) and turned down the min RPM on the other CPU fan. (Turned down the rpm at which the MB will throw an error.)

So, if my CPU fan dies, (zero RPM) I will get an alert. But I won't be bothered when the fan idles at ~400-500 RPM. (I set the min to 200RPM IIRC)

which fan header did you plug it in? maybe you used a different one, and bios is getting 0 rpm on the cpu fan header. double check, it is usually 4pin since its pwm

4 pins