My front panel headphones and mic is not working. How to find out is it the audio card or the connections of the case?

[Startup123]

Hi,
I have ASUS Rampage Formula mobo that comes with the SupremeFX II audio card. My case is Cooler Master CM 690.
My headphones and microphone don't work when I plugged them in the Input/Output Function front panel of the Cooler Master. They work fine when plugged in the external jacks of the audio card at the back of my computer.

The SupremeFX II audio card has an internal HD connector where I connected the HD connector cable of the Input/Output Function panel. My audio card is using the latest driver provided from ASUS and I went through the manual many times making sure that I've set up correctly the audio software and devices.

I sent detailed description of the problem to both ASUS and Cooler Master and they both said that they can replace their parts - the audio card and the I/O panel of the case. But it is most likely than one of them is the culprit and I wonder how to find out.

Any ideas will be greatly appreciated.

 

[footballrunner800]

I have the same problem with a cm stacker 830. I figured out that it was the front panel audio because if i kept moving the headphone connection, i would sometimes be lucky to get some sound. You should check by connecting some headphones, moving the plug around, and then seeing if windows changed the default audio device to headphones.