I'm having a problem with the SM Bus controller. it appears with an explanation mark in Device manager. I would install the driver manually but i'm not sure which is the right one. I don't know what device is that actually. How can i know? It seems like it's a known problem but i didn't find a good answer for my question. I'm using Windows 8.1 64-bit:
Gigabyte Z97-d3h MoBo.
Intel CPU 4790k.
Kingston HyperX 16GB RAM.
MSI gtx970 4G GPU.
Kingston 3TB HDD.
Samsung Evo 250GB SSD.
EVGA 650W Gold PSU.