First about OCCT. IT is easier, at least for me, to see things now. To make it easier for you lets customize it a bit. OCCT right window, look up, you see 2 buttons, click the left one until you see only numbers, no graphs. This way you see only what we need. Second, you can rename Sensor Name, lets do this.
I don't remember if you installed any video card? So, I would skip video card abbreviations.
OCCT left window click on ORANGE big button, this is preferences. On the far right column check all boxes, so you enable all censors. You can rename third column from the left, lets spend 2 minutes and make all very easy.
Renaming, I will provide explanation in ( ) do not insert it there.
TMPIN0 - CPU (this is socket temperature censor, CPU cooler depends on it when it is regulated)
TMPIN1 - Motherboard (this sensor is placed I think at the heatsink which is closest to CPU location, I found this out by testing fans, when I placed CPU cooler pull fan this temperature dropped by almost 20 C)
Core # - do not change, leave as is.
Assembly (it is your hard drive) - HDD (or if you named your hard drive, then name. When you place second hard drive, you will see second sensor appears as Assembly (2) )
FANIN0 - CPU push fan (this is speed of your CPU push fan)
FANIN1 - Exhaust fan (this is speed of your exhaust fan)
To save settings simply close the window by X.
This is it. Once you install you video card, you will see FANIN0 (2) and TMPIN0 (2) - video card sensors.
Now about Exhaust fan. Do you have it connected to motherboard (I will call it MOBO later) and to PSU at the same time? If yes, it is fan internal censor acting up, not motherboard. I had similar to this fan CityNet 92mm Case Fan from local store Fry's, it doesn't have internal sensor and it has 3/4 pin configuration, which makes MOB happy (MOBO thinks it is in control) and when you attach second wire with 4 pin to PSU, it makes you happy, because now fan runs at maximum RPM!
You Exhaust fan has only 1 wire for 3 pin, my choice has 3 wires, so maybe this is the case.
Theoretically, if you attach exhaust fan to PSU only and nothing attached to MOBO, MOBO will think that exhaust fan failed, and PC not suppose to boot! Did you booted without attaching to MOBO?
And the last thing. Very important one. You have no idea about it until now and you still don't. Look at your OCCT CPU VCORE values, I see 1.49, this is too much. I have 1.36-1.39 and I overclocked my CPU, and you not. We would have to figure out how to lower this number, otherwise, you might burn your CPU socket earlier, my VCORE is also high, but not as high as yours.
Lets leave VCORE for last for now and deal with fans.
