I have the same problem, under hd audio controller there is an exclamation point and says device failed to start, its an asus n55sf laptop
hardware ids are the same:
PCI\VEN_8086&DEV_1C20&SUBSYS_1AA31043&REV_05
PCI\VEN_8086&DEV_1C20&SUBSYS_1AA31043
PCI\VEN_8086&DEV_1C20&CC_040300
PCI\VEN_8086&DEV_1C20&CC_0403
"Sound, video and game controllers" is not listed in device manger, is there any fix ?