IOReg file is corrupted, can't open it. Try using IORegistryExplorer v2.1, not 3.0
Audio should work with layoutid=3, try adding CodecCommander.kext.
AppleBacklightFixup.kext is integrated into WEG, so you can eliminate that.
Wifi, make sure you have the correct version for your version of MacOS.
BT, make sure it's detected under USB, if not, fix your USB ports.