Click . Click the Have Disk... button.
Windows 10 installs generic High Definition Audio drivers that do not activate the Cirrus Logic chip properly.
If the internal speakers are fine but plugging in headphones yields no sound or a red light from the jack:
If you can tell me which your A1278 was made (e.g., Mid-2012 or Early 2011 ) and if you see a red "X" on your volume icon, I can give you the exact step-by-step for your specific hardware. Troubleshoot sound problems on Windows with Boot Camp Apple Macbook Pro A1278 Audio Driver Windows 10
Depending on your current setup, try these methods in order: Method A: Manual Driver Pointing (The Quickest Fix)
This comprehensive guide explains why this issue happens and provides step-by-step solutions to get your MacBook Pro A1278 audio working perfectly on Windows 10. Why the Audio Fails on Windows 10
This method works if you installed Windows via the Boot Camp Assistant in macOS. Windows 10 installs generic High Definition Audio drivers
Because the A1278 is an older machine, Apple’s official Boot Camp support for this model stopped at certain legacy drivers. If you simply run the Boot Camp installer from a 2020 or newer support package, it may refuse to install the Cirrus Logic drivers correctly, or it may overwrite working configurations with generic High Definition Audio drivers that are incompatible with Apple's proprietary pin configurations.
Microsoft occasionally releases driver updates through Windows Update that can help with compatibility issues.
If you are running into errors during the installation, let me know the of your A1278 MacBook Pro and whether your Device Manager displays a yellow warning icon next to the audio controller. Share public link Why the Audio Fails on Windows 10 This
Download Boot Camp Support Software 4.0.4033 . Step 2: Install the Audio Driver manually Extract the downloaded zip file on your Windows 10 desktop.
Note: Many users report that the unmodified Boot Camp 5.1.5621 driver works up to Windows 10 22H2 without issue. Only modify if all else fails.
Install the Boot Camp Control Panel :