No audio in windows 10

chaos2984 wrote:

I just checked the other HD and it is in Legacy mode.

How do i do that exactly without using OS X

And Audio will work in Legacy (BIOS) mode. See the previous post regarding formatting.

chaos2984 wrote:

What do you mean UFEI? Well I installed windows 10 the same way on each hard drive. The only difference was that it was in thr Nvidia chipset first before it went into the intel chipset laptop. But both were installed the same identical way as far as the OS is concerned.

There are two types of Windows installations. EFI and BIOS. EFI does not work correctly on Macs older than late 2013 models. Macs prior to late 2013 require BIOS otherwise Audio does not work. This is achieved by creating a Hybrid MBR using BC Assistant. If you do not use BCA, it is a guessing game on which type is installed. This is why msinfo32 will show you what type of the installation it is.

There are differences in Audio when installed on a nVidia (discrete GPU) Mac vs a Intel-only Mac (integrated GPU). W10 has no Apple-certified drivers on Macs older than 2012 Macs. Generic drivers must see hardware correctly to work. If you are moving hard disks around between these two models, you are creating issues for yourself.

chaos2984 wrote:

I don't think BC matters because it works on that one hard drive. I don't want OSX on it at all. I ran the BC installer once I had windows up and going.

The BC Driver installer is unrelated to BC Assistant. BC Assistant downloads the correct BC drivers based on Mac Model identifiers. If you do not use BCA, you must create the appropriate disk partitions and MBRs as necessary, before you install Windows.

chaos2984 wrote:

What do you think about installing windows 8.1 then if the driver works then upgrade to windows 10.

If W8.1 is supported on your model and you have the correct disk partitioning structures, then you can start with W8.1 otherwise you will need W7 (or WXP) and upgrade it to W10.

See the following links for supported versions of Windows on Mac hardware.

Install Windows 7 and earlier on your Mac using Boot Camp - Apple Support

Use Windows 8.1 on your Mac with Boot Camp - Apple Support

Use Windows 10 on your Mac with Boot Camp - Apple Support

Here is an example of a W10 installation on a 2012 Intel-only MBP.

diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *512.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS OSY-MBP13 380.3 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data BOOTCAMP 131.0 GB disk0s4

sudo fdisk /dev/disk0

Password:

Disk: /dev/disk0 geometry: 62260/255/63 [1000215216 sectors]

Signature: 0xAA55

Starting Ending

#: id cyl hd sec - cyl hd sec [ start - size]

------------------------------------------------------------------------

1: EE 0 0 2 - 25 127 14 [ 1 - 409639] <Unknown ID>

2: AF 25 127 15 - 1023 250 4 [ 409640 - 742676624] HFS+

3: AB 1023 250 5 - 1023 1 27 [ 743086264 - 1269536] Darwin Boot

*4: 07 1023 2 5 - 1023 121 5 [ 744355840 - 255858688] HPFS/QNX/AUX

Notice the Cirrus Audio devices and the BIOS Mode shown in the following image. Audio works.

chaos2984 wrote:

So I installed an SSD and installed windows 10 on it. And I cannot figure out how to get the audio to work at all. I keep getting fault code 10. I have tried everything i know and I can't get it to work at all. And i know its not a hardware issue. I can't figure out how to get the right drivers on there for it to install correctly.

Did you check the Device Manager for any unknown devices? Did you install the SSD on the Intel GPU Mac or the nVidia GPU Mac? Did you install Windows on the SSD from scratch using BC Assistant?

If you install W10 using UEFI, Audio on the A1278 will not work. This is why we need to check what is the mode of the installation. Bypassing BC Assistant usually creates a problem because the installation type is chosen incorrectly. If there is no hardware exposed, drivers do not work.

chaos2984 wrote:

I used windows disc to format both drives and install the OS.

W10 defaults to a GPT-only EFI installation on a Mac, unless the partitioning forces it to use legacy BIOS.

chaos2984 wrote:

But there is no difference in the install from the one hard drive to the other. The only difference is that one test drive has been in a Nvidia machine then the intel. And the ssd only in the intel.

It has to be software related. Everything else is the exact same. I can't see if being hardware issue when I swap in a different hd with same OS and it works fine.

You will need to confirm with msinfo32. The difference is in the environment for the disk, not in the process you follow.

It needs to be in BIOS mode as shown in my screen shot. UEFI is EFI. Audio will only work in BIOS mode on your Mac models. The only way to change it is to remove Windows, and either create a GPT/Hybrid MBR, or format your disk as MBR, if the whole disk will be dedicated to Windows.

Using https://technet.microsoft.com/en-us/library/cc766465(v=ws.10).aspx , you can use the following sequence with appropriate parameters.

convert mbr

create partition primary

format

You can also use the Windows installer and format appropriately.

With the SSD inside the Mac, boot from the W10 DVD installer, Type Shift+F10 when the first screen of the installer shows up, which will open a command prompt. Type

diskpart

Type the following and hit enter to list your drives:

list disk

This will display a list of disks. Make sure your drive is listed here before you continue.

Identify the disk ID of your external hard drive. Replace # by your real external disk ID in the command below:

select disk #

Clean all partitions by typing the following (warning: this will erase all data on the drive!):

clean

Type the following to use MBR as partitioning format:

convert mbr

Create the boot partition by typing the following followed by the enter key:

create partition primary size=350

This will create a 350MB partition on your external drive

Format the partition in FAT32 by typing the following:

format fs=fat32 quick

Set this partition to active by typing:

active

Assign a letter to mount this partition. We will use letter B in our example. If B is already used on your PC, replace B by any other available letter:

assign letter=b

Windows will detect a new drive and probably display a pop-up. Ignore that.

Create the Windows installation partition using all the remaining space available on the external drive by typing the following:

create partition primary

Format the new partition in NTFS:

format fs=ntfs quick

Assign a letter to mount this partition. We will use letter O in our example. If O is already used on your PC, replace O by any other available letter:

assign letter=o

Windows will detect a new drive and probably display a pop-up. Ignore that.

Exit the disk partitioner utility by typing:

exit

Now try to install Windows on the Primary partition.

Excellent. Glad to see it working. You do not need to burn the DVD again. Using Alt/Option should allow choosing the legacy 'Windows' icon instead of the newer 'EFI Boot' icon. Does that not work?

Also, please remember to backup Windows and create a Windows System Restore point.

On the Mac where Audio does not work, can you run msinfo32 and check the BIOS Mode value?