You are getting a bad reading for the 12v. Check the bios reading; any reading between 11.7 and 12.3 is good. For the cpu fan, your motherboard bios may have a smartfan setting which you can change, but some oem systems by dell, etc. may not be adjustable. You probably are fine. Enjoy the quiet. If you find a calibrate function in the hardware monitor section with smartfan, use it, then select "quiet" if it's an option.