Windows 8 and 8.1 Forums


USB dac not being seen

  1. #1


    Posts : 216
    Win 8.1 Pro x64

    USB dac not being seen


    Win 8.1 Pro x64. I've been using a USB dac for the past few weeks that when I change interconnects or reconnect the USB side, it's been hit and miss whether or not the dac is immeidately seen by Windows Sound. Either reconnecting or reinstalling the driver has solved it. Since yesterday, however, it's all been miss; that is, Windows is throwing up the USB device can't be seen message when I connect it with its USB cable or another USB cable. Among the tests I've tried is swapping in another dac, call it Dac B, and that is being seen.

    Before I return the dac for testing, its developer (a Mac user) would like me to do one more test to assure it's not a software issue: take the dac's driver out of play and use the default Windows sound (16/44). I've uninstalled the driver - it wasn't seing the dac anyway - but am not sure how to do the test since the CP>Devices shows "unknown USB device" and "driver error." When I choose Realtek Digital Output in Sound ("Ready") and play a YouTube video, it looks like it's playing (in Sound), but there's nothing coming out of the speakers. What am I missing here? Could there be another reason why the dac isn't being seen by Windows? I did switch hubs the USB connectors are plugged into in the back of the computer (the cable has separate power and data lines on the computer side). Thanks,

      My System SpecsSystem Spec

  2. #2


    This sounds like a USB issue and not really a "sound" issue.

    Depending on what is happening in the PC can determine if a device can be reconnected and be recognized. Many devices require using the "Safely Remove Hardware" function (Icon is in the Notification Area on the lower left of the screen) to removed a device or the status will get corrupted.

    I have a recording studio and several software add-ons that require an iLok key. I have several USB devices including a Roland Octa-Capture (8 audio track recording interface unit), Behringer BCF2000 control surface, etc. None of these have the status corrupted by removing them. However, if I disconnect the iLok key (USB) it will get corrupted unless I use the Safely Remove Hardware function.

    This also applies to other USB devices, such as USB flash drives, USB connected hard drives, etc.

    Could this be the issue?
      My System SpecsSystem Spec

  3. #3


    Posts : 216
    Win 8.1 Pro x64


    I haven't seen it with anything so far, but if it is, how would I reverse the process at this point since the dac isn't being seen?
      My System SpecsSystem Spec

  4. #4


    If the Windows corruption has happened, connect the unit and then display the USB section in the Device Manager. There will probably be an Unknown Device listed. That will be the DAC. Right click to highlight that entry and then Left click "uninstall". DO NOT uninstall the drivers. Then physically disconnect the DAC, reboot the PC and after Windows starts connect it and Windows should detect and reinstall it.
      My System SpecsSystem Spec

  5. #5


    Posts : 216
    Win 8.1 Pro x64


    I had already uninstalled the driver, so I did a system restore to a point before this started. Restore warned that the driver might not be ok, but Windows and RevoPro show it installed. Don't know if there's any other way to check, since it won't install without the dac being recognized, which it still isn't after the uninstall/reboot sequence you suggested. Any other ideas? Many thanks,

    Update: Tried to set it up on my laptop but got same result. Any other way to check?
    Last edited by highstream; 28 Apr 2014 at 20:05.
      My System SpecsSystem Spec

  6. #6


    If it does the same thing on two different PC's most likely a problem with the device, rather than a PC or USB problem.
      My System SpecsSystem Spec

USB dac not being seen
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