Leadinggol

Hi,

As per the description, I understand that after installing Windows on a Mac using Boot camp, you notice that you no longer hear sound from Mac book pro.

Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement.

This issue can be caused by outdated or corrupted drivers and other software.

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To resolve the issue follow the steps in the methods mentioned below to check if its helps:

Method 1: Update to the latest version of Boot Camp

To download and install the latest update for Boot Camp, follow these steps:

1. Go to http://www.apple.com/support/bootcamp/

2. Click Downloads.

3. Scroll until you find the latest Boot Camp update for the Mac system you’re running.

4. Click Download.

5. Follow the on screen instructions to download and install the latest software update for Boot Camp.

6. Reboot your Mac.

Method 2: Install the latest version of your audio drivers

Install the audio driver from your Mac OS disk or download the latest version of the audio driver from Apple.

Option 1: Install the drivers from you’re Mac OS disk

1. Start your Mac and boot into Windows.

2. Insert your Mac OS installation disk.

a. If the installer window doesn’t appear automatically, click the Start button, click Computer.

b. Click the drive that contains the Mac OS disk.

c. Double-click the Boot Camp folder.

d. Double-click setup.exe.

e. Click Install.

3. Follow the on screen instructions to install the drivers.

4. Reboot your Mac.

No Audio Devices Are Installed

Option 2: Install the drivers from Apple’s website

1. Start your Mac and boot into Windows.

2. Open Internet Explorer and go to http://www.apple.com/support

Microsoft Mpu Audio Drivers For Macbook Pro

3. Click Downloads.

4. Scroll until you find the latest audio drivers for the Mac system you’re running.

5. Click Download.

6. Follow the on screen instructions to download and install the latest audio drivers for your Mac.

Fast Track M-audio Drivers For Mac

7. Reboot your Mac.

Microsoft Audio Driver Update

Hope this information is helpful, if the issue persist please write us back with the information in brief so that we can assist you further.

Audio Drivers For Windows 7

The MIDI port driver manages a MIDI synthesizer or capture device. The adapter driver provides a corresponding MIDI miniport driver that binds to the MIDI port driver object to form a MIDI filter (see MIDI and DirectMusic Filters) that can capture or render a MIDI stream.

The MIDI port driver exposes an IPortMidi interface to the miniport driver. IPortMidi inherits the methods in base interface IPort. IPortMidi provides the following additional methods:

Notifies the port driver that the MIDI synthesizer or capture device has advanced to a new position in the MIDI stream.IPortMidi::RegisterServiceGroup

Registers a service group object with the port driver.A service group contains a list of one or more service routines that are to be called when the miniport driver calls Notify; for more information, see Service Sink and Service Group Objects.

The MIDI port and miniport driver objects communicate with each other through their respective IPortMidi and IMiniportMidi interfaces. The miniport driver uses the port driver's IPortMidi interface to notify the port driver of hardware interrupts. In addition, the port driver communicates with the miniport driver's stream objects through their IMiniportMidiStream interfaces.

Audio Drivers For Mac

In Windows XP and later, the IPortMidi and IPortDMus interfaces are both implemented in a single internal driver module. This consolidation is facilitated by the similarity of these two interfaces. For example, the same methods are defined for both interfaces. Applications written for previous versions of Windows should see no change in the behavior of the IPortMidi and IPortDMus interfaces resulting from consolidation of the MIDI and DMus port drivers.