littledragon294

Q: Windows 10 on Macbook: "No audio output Device is installed"

I install Windows 10 on my MacBook, and MacBook has no sound. "No audio devices is installed."

 

Please Help.

 

 

MacBook Pro 13'' Mid 2012, Yosemite 10.10.4 .

Posted on Jul 20, 2015 12:13 AM

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Q: Windows 10 on Macbook: "No audio output Device is installed"

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  • by Loner T,

    Loner T Loner T Jul 21, 2015 10:21 AM in response to littledragon294
    Level 7 (23,920 points)
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    Jul 21, 2015 10:21 AM in response to littledragon294

    Safe Mode - Step 1.

  • by littledragon294,

    littledragon294 littledragon294 Jul 21, 2015 10:34 AM in response to Loner T
    Level 1 (0 points)
    Jul 21, 2015 10:34 AM in response to Loner T

    BCA still alert error. Can I remove EFI patition?

     

    Screen Shot 2015-07-21 at 23.28.22.png

    Screen Shot 2015-07-22 at 00.05.54.png

  • by Loner T,

    Loner T Loner T Jul 21, 2015 10:38 AM in response to littledragon294
    Level 7 (23,920 points)
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    Jul 21, 2015 10:38 AM in response to littledragon294

    No. Do not remove EFI partition. If Step 1 did not work, try Step 2.

     

    On a working machine...

     

    diskutil list

    /dev/disk0

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *1.0 TB     disk0

       1:                        EFI EFI                     209.7 MB   disk0s1

       2:                  Apple_HFS Macintosh HD            741.7 GB   disk0s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

       4:       Microsoft Basic Data rMBPBCMP                258.0 GB   disk0s4

     

    sudo fdisk /dev/disk0

    Disk: /dev/disk0 geometry: 121643/255/63 [1954210120 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  54  16 [    409640 - 1448624648] HFS+      

    3: AB 1023  54  17 - 1023  60  39 [1449034288 -    1269536] Darwin Boot

    *4: 07 1023  87  51 - 1023 238   3 [1450305536 -  503904256] HPFS/QNX/AUX

     

    sudo gpt -vv -r show /dev/disk0

    Password:

    gpt show: /dev/disk0: mediasize=1000555581440; sectorsize=512; blocks=1954210120

    gpt show: /dev/disk0: Suspicious MBR at sector 0

    gpt show: /dev/disk0: Pri GPT at sector 1

    gpt show: /dev/disk0: Sec GPT at sector 1954210119

           start        size  index  contents

               0           1         MBR

               1           1         Pri GPT header

               2          32         Pri GPT table

              34           6       

              40      409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

          409640  1448624648      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

      1449034288     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      1450303824        1712       

      1450305536   503904256      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

      1954209792         295       

      1954210087          32         Sec GPT table

      1954210119           1         Sec GPT header

  • by littledragon294,

    littledragon294 littledragon294 Jul 21, 2015 10:44 AM in response to Loner T
    Level 1 (0 points)
    Jul 21, 2015 10:44 AM in response to Loner T

    Step 2 did not work too. Please help. Thanks so much.

  • by Loner T,

    Loner T Loner T Jul 21, 2015 11:03 AM in response to littledragon294
    Level 7 (23,920 points)
    Safari
    Jul 21, 2015 11:03 AM in response to littledragon294

    Step 3.

  • by littledragon294,

    littledragon294 littledragon294 Jul 21, 2015 7:10 PM in response to Loner T
    Level 1 (0 points)
    Jul 21, 2015 7:10 PM in response to Loner T

    Step 3: Boot to USB installer OS X and verify startup disc. Right?

  • by Loner T,

    Loner T Loner T Jul 21, 2015 7:21 PM in response to littledragon294
    Level 7 (23,920 points)
    Safari
    Jul 21, 2015 7:21 PM in response to littledragon294

    You are doing Resolve startup issues and perform disk maintenance with Disk Utility and fsck - Apple Support .

     

    Boot into Internet Recovery using Command+Opt+R after you power up the Mac (you need to see a spinning globe). Please use a wired connection.

     

    In Utilities -> Terminal in Recovery Console run the steps in section Use fsck if necessary on disk0 - your internal disk.

  • by littledragon294,

    littledragon294 littledragon294 Jul 22, 2015 1:41 AM in response to Loner T
    Level 1 (0 points)
    Jul 22, 2015 1:41 AM in response to Loner T

    Step 3 did not work, too. Should I reinstall OS X?

  • by Loner T,

    Loner T Loner T Jul 22, 2015 6:33 AM in response to littledragon294
    Level 7 (23,920 points)
    Safari
    Jul 22, 2015 6:33 AM in response to littledragon294

    Yes, please run Step 4 a, b and c.

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