Installing Windows 10 on an older Apple MacBook Pro A1278 often leads to a common frustration: "No Audio Output Device is Installed." Because these legacy unibody models (2008–2012) use a specific Cirrus Logic or Realtek chip, standard Windows updates often fail to provide high-quality, or even functional, sound.
Boot Camp Support Software 5.1.5769: This specific version is often cited as the most stable for older 64-bit MacBook Pros running Windows 10. 3. Installation Steps
General Tips for Finding and Installing Audio Drivers:
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Step 4 – Post-Install Optimizations for High Quality
- Disable audio enhancements:
Settings → Sound → Device Properties → Additional Device Properties → Advanced → Uncheck “Enable audio enhancements”.
- Set default format:
Same tab → Default Format → 24-bit, 192000 Hz (Studio Quality) – The CS4206 supports up to 192 kHz/24-bit.
- Enable headphone jack auto-detection:
Modify registry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\4d36e96c-e325-11ce-bfc1-08002be10318\0000\Settings → Add DWORD JackAutoDetect = 1.
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