Windows 10 versions after May 2019 (1903) introduced stricter audio stack changes. The native A1278 driver may install but produce "Failed to start device (Code 10)."
BootCamp\Drivers\Audio\Realtek\
| Issue | Fix | |-------|-----| | No audio after sleep | Disable fast startup in Windows Power Options | | Headphone jack not detecting | Install Cirrus driver and the Apple “Audio Device” (AppleHDA) from Boot Camp | | Microphone not working | Ensure “Microphone (Cirrus Logic)” is enabled in Privacy settings | | Driver signature error | Disable driver signature enforcement temporarily (Shift + Restart → Troubleshoot → Startup Settings → Disable driver signature enforcement) | Apple Macbook Pro A1278 Audio Driver Windows 10
