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Level 1

12 points

No sound on 27 inch iMac Mid 2011 running Windows 8.1 on Botcamp

Hello! I just installed 8.1 on my Mac and everything went very well. Then only issue I found is the sound and the brightness. I try to turn down the brightness but nothing happens. The bar shows that it's going down but it isn't. The sound is also broken. When I try to turn up the sound, there is a circle with a cross with the volume icon. I tried many things to fix the sound issue. I tried downloading new drivers, updating drivers, etc. The brightness issue, I don't really care but it would be useful if we can fix it too. I talked to Microsoft about the sound problem and they said the only way to fix it is to get Windows 10. Unfortunately, my mid 2011 Mac does not support Windows 10 on boot camp. I'm in desperate need of the sound in windows so I need your help! Thanks!

Posted on Oct 15, 2017 8:28 PM

152 replies

amytom12 Author

Level 1

12 points

Oct 17, 2017 1:48 PM in response to Loner T

Oh, by the way. I did used x code a while back to fix the 2 option issue. Now I have 3 options : Create a Windows 7 or 8 version install disk, Download the latest windows support software from apple, and install windows 7 or 8. Which one do I pick?

Loner T

Level 9

59,471 points

Oct 17, 2017 2:20 PM in response to amytom12

amytom12 wrote:

Hello! I just searched through my DVD pile and found 2 DVD types : DVD + R DL and DVD - R. Will these work? I don't have any DVD-R SL's though.

DVD-R by default is SL (Single Layer), and should have a capacity of about 4.75Gb. It should work.

amytom12 Author

Level 1

12 points

Oct 17, 2017 3:39 PM in response to Loner T

Sure, i'll do that. I just found out my disc is not RW and I have data on it. I tell you the results on the weekend because on Sunday or Sat., I'll be going to out to buy a DVD pack. Thank you for your help! Talk to you on the weekend.

Loner T

Level 9

59,471 points

Nov 12, 2017 11:18 AM in response to amytom12

Your disk looks clean. You may want to disconnect the 32 GB USB drive, and check if the Install check box in BC Assistant is enabled. If it is enabled, check the Install box, and click on Continue and follow prompts.

Loner T

Level 9

59,471 points

Nov 12, 2017 12:33 PM in response to amytom12

You are not in the directory where the ISO is located. Right-click on ISO file in Finder, and select Get Info. Copy the path (without the filename), and in Terminal, type

cd <Paste/Path/Using/Command+V>

and now run the same commands which I gave you earlier.

amytom12 Author

Level 1

12 points

Nov 12, 2017 3:35 PM in response to Loner T

Okay. I was just experimenting with the openssl md5 command in terminal, and I found out that when I type down "openssl md5 (File Path)" it doesn't work for the windows iso file but I did the same thing with another file and it did work. I think the ISO file does not provide you was a checksum.

This is a QuickTime clip I took:

iMac:~ XXXXXXX$ openssl md5 /Users/XXXXXXX/Desktop/Clip\ 1.mov

MD5(/Users/XXXXXXX/Desktop/Clip 1.mov)= b7917d796d8c9788bba51a810af727ff

iMac:~XXXXXXX$

And this is with the ISO file:

iMac:~ XXXXXXX$ openssl md5 /Users/Tom-Tran/Desktop/Win8.1_English_x64.iso

There is no long string of code like the one above. Does this mean that the ISO file is corrupted?

Loner T

Level 9

59,471 points

Nov 12, 2017 3:49 PM in response to amytom12

amytom12 wrote:

And this is with the ISO file:

iMac:~ XXXXXXX$ openssl md5 /Users/XXXXXXX/Desktop/Win8.1_English_x64.iso

There is no long string of code like the one above. Does this mean that the ISO file is corrupted?

Does the command complete successfully? Does the 'ls -lg' command complete on the ISO file?

amytom12 Author

Level 1

12 points

Nov 12, 2017 4:06 PM in response to Loner T

Ok this is what I got when I did " ls -lg (File Path)

iMac:~ XXXXXX$ ls -lg /Users/XXXXXX/Desktop/Win8.1_English_x64.iso

-rw-rw-rw-@ 1 staff
4320526336 Jul 21 19:50 /Users/XXXXXX/Desktop/Win8.1_English_x64.iso

iMac:~ XXXXXX$

So yeah, it does work successfully. Sorry for the inconvenience. 😕

Loner T

Level 9

59,471 points

Nov 12, 2017 4:13 PM in response to amytom12

amytom12 wrote:

Ok this is what I got when I did " ls -lg (File Path)

iMac:~ XXXXXX$ ls -lg /Users/XXXXXX/Desktop/Win8.1_English_x64.iso

-rw-rw-rw-@ 1 staff
4320526336 Jul 21 19:50 /Users/XXXXXX/Desktop/Win8.1_English_x64.iso

iMac:~ XXXXXX$

So yeah, it does work successfully. Sorry for the inconvenience. 😕

Now run

openssl md5 /Users/XXXXXX/Desktop/Win8.1_English_x64.iso

amytom12 Author

Level 1

12 points

Nov 12, 2017 4:40 PM in response to Loner T

Oh wait, nevermind. It turns out that I just had to wait a few mins for the code to show up. This is what i got:

Last login: Sun Nov 12 19:18:36 on ttys002

iMac:~ XXXXXX$ openssl md5 /Users/XXXXXX/Desktop/Win8.1_English_x64.iso

MD5(/Users/XXXXXX/Desktop/Win8.1_English_x64.iso)= e0d4594e56c0545d379340e0db9519a5

iMac:~ XXXXXX$

Loner T

Level 9

59,471 points

Nov 13, 2017 3:17 PM in response to amytom12

The earliest I can look for one is this weekend. One option you have is to re-install macOS (the same version as your current internal disk version) and an external disk, and then copy the file to your internal disk.

Loner T

Level 9

59,471 points

Nov 14, 2017 12:56 PM in response to amytom12

amytom12 wrote:

So I just have to copy and paste "sudo codesign -fs - /Applications/Utilities/Boot\ Camp\ Assistant.app" into terminal and it should work? And what is "--deep"?

Instead try

sudo codesign --deep -fs - /Applications/Utilities/Boot\ Camp\ Assistant.app

It recurses through the directory structure. In Terminal you can type man codesign which will give you details of the command.

amytom12 Author

Level 1

12 points

Nov 14, 2017 1:15 PM in response to Loner T

Okay, this is what I got...

sudo codesign --deep -fs - /Applications/Utilities/Boot\ Camp\ Assistant.app

Password:

/Applications/Utilities/Boot Camp Assistant.app: replacing existing signature

/Applications/Utilities/Boot Camp Assistant.app: resource fork, Finder information, or similar detritus not allowed

Is that correct?

Loner T

Level 9

59,471 points

Nov 14, 2017 2:37 PM in response to amytom12

I think you code signed the existing Info.plist, not the original. You will first need to copy the original to it's current location.

sudo cp <OriginalFile> /Applications/Utilities/Boot\ Camp\ Assistant.app/Contents/Info.plist

and then run the 'codesign' command.

Loner T

Level 9

59,471 points

Nov 15, 2017 1:25 PM in response to amytom12

Excellent. Run Disk Utility and create a FAT32 partition of the size you want Windows to be. We will also need to manually create a MBR. Once the MBR is created, on this screen you will need to select the Windows icon.

As a test, if you select the Windows icon, does the Windows installer start?

No sound on 27 inch iMac Mid 2011 running Windows 8.1 on Botcamp