Here is the step-by-step process:
Getting audio working on a MacBook Pro A1278 running Windows 10 is rarely a hardware failure; it is a legacy driver compatibility issue.
has become a popular "reviewers' choice" for force-enabling hardware drivers in Windows 10. Audio Performance & Quality No audio in windows 10 - Apple Support Community Apple Macbook Pro A1278 Audio Driver Windows 10
There are two main ways to obtain this driver package:
For the Apple MacBook Pro A1278 Go to product viewer dialog for this item. Here is the step-by-step process: Getting audio working
If you see a red light glowing inside your headphone jack and still hear no sound, your MacBook thinks a digital audio toslink cable is plugged in.
: Download or copy the driver files. The key files for the audio driver often include: If you see a red light glowing inside
To fix the problem, you first need to understand the hardware inside your specific A1278.
If you installed Windows 10 via pure EFI mode (without utilizing the Boot Camp setup process), your audio card might be completely missing from the Device Manager, or it may show up as an unresolvable error under as an Intel High Definition Audio controller.