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Once you have the BootCamp5.1.5621 folder, installation is straightforward. Run the setup.exe file as an administrator. This will install all necessary drivers, including the critical Cirrus Logic audio drivers.
To fix this, you must manually install the correct legacy Apple Boot Camp audio drivers compatibility-matched for Windows 10. Step-by-Step Installation Guide
Sometimes the driver installs but fails to handle the dynamic switching between the audio channels.
Is the currently visible inside your headphone jack? Apple Macbook Pro A1278 Audio Driver Windows 10
If you are in Legacy mode but have no sound, follow these steps to get the specific Cirrus Logic drivers needed for the A1278:
Before attempting to force driver installations, complete these initial checks to ensure your system is prepared:
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If you have tried all of the above and still see Error Code 10, you are likely trapped in the UEFI installation mode. You have two choices: This public link is valid for 7 days
Point it to the folder where you extracted the Boot Camp drivers. Step C: The "EFI vs Legacy" Issue
Once you have the audio working, you might as well make the rest of the system run smoothly. Many owners of the A1278 upgrade to a and add more RAM to improve performance dramatically in Windows 10.
The most stable way to restore sound is to extract the dedicated audio controllers from Apple’s official legacy Boot Camp archive. Step 1: Download the Correct Boot Camp Package
Sound plays through the headphone jack but not the built-in speakers. Audio plays at incorrect speeds. Can’t copy the link right now
Select the .inf file (e.g., CirrusAudio.inf ), click , and then click OK .
Click and navigate to the extracted Boot Camp driver folder ( BootCamp\Drivers\Cirrus\ ).
If the driver refuses to install, you may need to disable Driver Signature Enforcement in Windows 10 startup settings. By following these steps, you should be able to get your MacBook Pro A1278 speakers working properly on Windows 10. If your audio still isn't working, I can help you find: