This guide is useful if you have the following problem
1. You are running Vista or Windows 7 on a Macbook using bootcamp. It can be unibody/ Macbook Pro 13/ Macbook Pro 15 or any other screen size.
2. You have no audio/ sound. In macbook pro, you may also see a red light in your audio jack.
This might also be helpful if your are having a very low sound volume.
To Fix Simply follow the steps below
Step 1:
Download the Macbook Pro Cirrus Logic CS4206A Driver from our server. Again, do not worry if you are running Windows 7 or Vista. (As a request, please do not hotlink this file anywhere else or our server will automatically remove the file from server.)
UPDATE: For newer Macbooks, you might need a newer driver which is availble here
Incase the above download link does not work, google “CirrusAudio.10.6.1.zip”. We found another working mirror here.
Step 2:
Extract the right type of Driver (depending on your windows XP/ 7/ 32 bit/ 64bit)
Step3:
This step is only for Windows 7 not Vista. Right Click on exe file of driver. Select Properties> Compatibility > Check run in compatibility as shown below. Select Windows Vista from drop down menu and Click OK

Step 4:
Double click the driver and install.
Run your favourite sound track because your sound is now working. You can also play the video below to test your sound
Update: Actually it DID work! I had the second monitor plugged in that had its volume turned down! Silly me.
Thanks..
Hmm.. another update, sound wouldnt work when the second monitor is connected via the DisplayPort, Volume on monitor is now turned up to max. Might be a monitor issue, but ive read that the MBP has issues outputing audio via DP… sure looks that waw, so needed to :
– Right Mouse click on Speaker Icon and
– click “Playback Devices”
– select “Speakers” as the default
These steps are clearly written and easy to follow; kudos. But I still can’t get this to work (Win7_x64). Tried changing the compatibility to Windows Vista, Vista (SP1), and Vista (SP2), none worked. I can run the Cirrus installer just fine, but Win sound mgr still says no audio devices installed. Grrrr. What am I doing wrong?
its work
Thank you.
Good thing i found your page before i went ahead and Install windows again.
For those still having issues, go into Device Manager, select the audio device that isn’t working, right click, Update Driver Software. Click “Browse my computer for driver software” then “Let me pick from a list of device drivers on my computer”. There should be a compatible CS4206S or CS4206B driver that you can choose, if not, deselect the “Show Compatible Hardware” checkbox and choose Cirrus Logic from the list. You’ll get a massive list of their drivers but be careful as not all of them work. I have tested most of the 4206A and 4206B drivers (the AB 71 update from 2013 would be best).
Or, alternatively for a newer more advanced working driver, download CS4207 from Cirrus Logic and click “Have disk”” and navigate to the folder you extracted the RAR to (link below) and choose the “cs420x_44.inf” file.
Your audio should now work flawlessly.
Cirrus Logic CS4207 download:
http://www.cirrus.com/en/support/lic/lic3.html?uri=/en/pubs/software/CS4207_LogoedDriverPackage_6-6001-1-39.zip
Thanks so much hypercore. You’re a freakin genius.
WOW …. JUST WOW ….. Massive Thanks ….. I was just about give up and reinstall the whole lot when I found your comments . Top of the Season to you !!!
Bless you thehypercore. Had been dealing with this issue for a very, very, very long time, and your second suggestion here fixed it. You are a wonderful person!
I am getting the error code 10 from windows. Still not working. Any suggestion?
Try deleting your driver software before you install the Cirrus Logic drivers. Reboot after uninstalling, install Cirrus Logic, then reboot once more. This should fix the issue. Picture to push you in the right direction below.
http://i.imgur.com/LJI36aA.png
Thumbs up after searching hundreds of forums this one worked up in just a minute! Thank you!
Good to see that OP’s guide is helping some but it is out dated. The guide I posted in December is more up to date. Considering there is so many people having this same issue on other forums I will make a step by step guide with pictures and download links. Don’t worry, you’re not just following some random kids guide, I’m fully A++ certified, have a networking degree and I work as a top level computer technician. Just give me some time to make the tutorial. I haven’t decided on whether or not to make a new article or just post it here. The guide will have every user running working audio drivers on any Macbook running any version of Windows 7 guaranteed.
So, new article or stick with comments? I don’t post on blogs/multimedia tech sites much.
Well any new guide? Please link 🙂
Thank you very much, now is working!!!
Cool worked perfectly
Thank u so much it works
OMG!!!! thanks thehypercore so much for the fix in the comments. I was about to reload windows. It worked.
Spent a lot of time searching for an answer to this problem. Thank goodness I found you site and resolved the problem immediately. Thanks a lot
I have the same problems, I got it to work with Ubuntu, it just worked, but Ubuntu sucked. Back to windows 7 with that as my only os. I’ve tried a ton of the cirrus logic drivers as suggested but after the X goes away from my audio and the sound meter thing moves like is playing sound when sound is playing, I still have no sound please help.
hello, I did all the steps but nu worked, maybe it’s because I have an iMac 2011.
When looking Cirrus Logic in the list of drivers not listed , please help .
this is really good bro