sudo kextload /System/Library/Extensions/AppleHDA.kext                                                                                                             at 12:42:42

Password:
Executing: /usr/bin/kmutil load -p /System/Library/Extensions/AppleHDA.kext
Error Domain=KMErrorDomain Code=71 "Authenticating extension failed: Kext com.apple.driver.AppleHDAHardwareConfigDriver v540.3 in codeless kext bundle com.apple.driver.AppleHDAHardwareConfigDriver at /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHardwareConfigDriver.kext:

Authenticating extension failed: Bad code signature
Authenticating extension failed: Kext com.apple.driver.AppleHDA v540.3 in codeless kext bundle com.apple.driver.AppleHDA at /System/Library/Extensions/AppleHDA.kext:

Authenticating extension failed: Bad code signature
Authenticating extension failed: Kext com.apple.driver.AppleMikeyDriver v540.3 in codeless kext bundle com.apple.driver.AppleMikeyDriver at /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleMikeyDriver.kext:

Authenticating extension failed: Bad code signature
Authenticating extension failed: Kext com.apple.driver.DspFuncLib v540.3 in codeless kext bundle com.apple.driver.DspFuncLib at /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/DspFuncLib.kext:

Authenticating extension failed: Bad code signature
Authenticating extension failed: Kext com.apple.iokit.IOHDAFamily v540.3 in codeless kext bundle com.apple.iokit.IOHDAFamily at /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/IOHDAFamily.kext:

Authenticating extension failed: Bad code signature
Authenticating extension failed: Kext com.apple.driver.AppleHDAController v540.3 in codeless kext bundle com.apple.driver.AppleHDAController at /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAController.kext:

Authenticating extension failed: Bad code signature" UserInfo={NSLocalizedDescription=Authenticating extension failed: Kext com.apple.driver.AppleHDAHardwareConfigDriver v540.3 in codeless kext bundle com.apple.driver.AppleHDAHardwareConfigDriver at /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAHardwareConfigDriver.kext:

Authenticating extension failed: Bad code signature
Authenticating extension failed: Kext com.apple.driver.AppleHDA v540.3 in codeless kext bundle com.apple.driver.AppleHDA at /System/Library/Extensions/AppleHDA.kext:

Authenticating extension failed: Bad code signature
Authenticating extension failed: Kext com.apple.driver.AppleMikeyDriver v540.3 in codeless kext bundle com.apple.driver.AppleMikeyDriver at /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleMikeyDriver.kext:

Authenticating extension failed: Bad code signature
Authenticating extension failed: Kext com.apple.driver.DspFuncLib v540.3 in codeless kext bundle com.apple.driver.DspFuncLib at /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/DspFuncLib.kext:

Authenticating extension failed: Bad code signature
Authenticating extension failed: Kext com.apple.iokit.IOHDAFamily v540.3 in codeless kext bundle com.apple.iokit.IOHDAFamily at /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/IOHDAFamily.kext:

Authenticating extension failed: Bad code signature
Authenticating extension failed: Kext com.apple.driver.AppleHDAController v540.3 in codeless kext bundle com.apple.driver.AppleHDAController at /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAController.kext:

Authenticating extension failed: Bad code signature}