Which board is that, the ASRock Z68 Extreme4? If yes, this board has a special switch between CPU1/2 fan and HWiNFO cannot report both. The switching logic is done pretty stupid so that at one time only one fan can be read, hence full monitoring doesn't work reliably. If your CPU2 header is empty, try to connect the fan there instead of CPU1.I don't see CPU fan in HWinfo. Aida64 shows it normally. I don't know why. Any info/help?
BTW is it possible to use HWinfo or some special plugin for it, to be able to create screenshots in games cos this is the one option I miss after abandoning afterburner and Aida64 and using HWinfo+RTSS for overlay after I upgraded to vega 56. I also don't like the overlay from radeon drivers. It's bad, as is that ReLive IMO.
HWiNFO cannot create screenshots in games, this is beyond its scope.