If, despite all efforts, you cannot get the internal speakers or headphone jack to work, there are two excellent and cost-effective workarounds.
Look for files named CirrusAudio64.exe or Setup.exe within that specific audio folder. Run in Compatibility Mode: Right-click the executable driver file ( CirrusAudio64.exe ). Select Properties . Click the Compatibility tab.
Your "High Definition Audio" device should change to Cirrus Logic CS4206B (AB 92) or similar, and sound should work instantly. Apple Macbook Pro A1278 Audio Driver Windows 10
If running the executable installer fails or throws an "OS version not supported" error, you can bypass the installer and force Windows 10 to accept the driver files through Device Manager. Step-by-Step Manual Driver Injection:
Windows attempts to install a generic High Definition Audio driver that is incompatible with Apple’s digital/analog combo jack switching logic. If, despite all efforts, you cannot get the
If you installed Windows 10 by booting directly from a USB stick in (bypassing the standard Boot Camp Assistant), the sound card—typically a Cirrus Logic chip—may not appear in the Device Manager at all.
: If you installed Windows 10 by booting from an "EFI Boot" option on your USB installer, your Mac is in Select Properties
Open your Windows Control Panel, navigate to Sound , and look at the playback tab. If "Digital Audio (S/PDIF)" is set as default, right-click your Speakers / Headphones selection instead and choose Set as Default Device .
Look for "High Definition Audio Controller" with a yellow triangle under .
If the driver is installed but you see a in the headphone jack and have no internal speaker sound:
The following sections outline every known method to resolve the audio issue, ranging from the simplest driver installations to complete OS reinstallations.