Windows 10: Dac not seen after Win 10 system image rollback (1607 fail to 1511) Solved

  1.    22 Jan 2017 #1

    Dac not seen after Win 10 system image rollback (1607 fail to 1511)


    I've had some 1511 to 1607 update "stuck" failures the past couple of weeks and have rolled back using a repair disk and a system image backup. The thing that's happened afterward both times is that my dac, which is connected to a USB PCI sound card in my desktop computer, is not being seen by Windows Sound or in Device Mgr. OTOH, the NVIDIA and Reaktek drivers do show (as they should). Moving the USB cable to a mobo USB port gets the dac to show, but actual sound only plays for a brief moment (1 second) before stopping. I've tried to reinstall the dac's USB driver with it connected to the sound card, but it always gives an error message that the dac needs plugging in, which of course it already is. Replugging doesn't change that result. So I'm stuck.

    The first time this happened with Win 10 last week, I tried unplugging and replugging the USB connector here and there, disabling the other sound drivers, and rebooting a number of times, all without success. That is, until all of a sudden the dac appeared again as it should. It's as if it corrects itself by some kind of magic (same sense as when it occurred while reinstalling Win 8.1 a couple of years ago). And since last week it's remained ok until this morning, when after Windows tried an OS upgrade that hung, I rolled back via a system image. I've also tried Yamicsoft's Win 10 Mgr repair module, without success.

    What I'm trying to figure out is if there's some logic in the way Windows handles this that will allow me to get the dac recognized. Any ideas? Thanks,
    Last edited by highstream; 22 Jan 2017 at 17:18.
      My ComputerSystem Spec

  2.    23 Jan 2017 #2

    Hi, I have a DAC (Teac UD-503) connected to my Windows 10 Pro, X64-bit machine via USB so let's see if I can help. Questions...

    1. What DAC is this?
    2. Do you have the latest drivers for said DAC?
    3. Are you connecting the DAC to the motherboard’s USB port?
    4. Which Port – USB 3.0? USB 2.0?
    5. In Playback devices (right click speaker icon, choose playback devices) is the DAC's device driver being shown?
    6. Is the device driver set at the default playback device?
    7. Under Device Manager - Sound, video and game controllers, does the DAC's driver show?

    I've got my DAC connected directly to the motherboard's USB 3.0 port and have never had any issues. Additionally, I've also got the DAC running through my SoundBlaster's ZXR soundcard via optical cable. My DAC allows for different connections and I just choose which driver I want to use via Playback Device. Anyway I mainly use USB, and as said, have never had issues.

    That said, perhaps answering those questions above my help solve your issue.

    Let us know.
      My ComputerSystem Spec

  3.    23 Jan 2017 #3

    Thanks for your reply. Sorry, I thought I had posted the solution here I came up with after a search around the 'net: in Device Manager > USB Controllers, right click on the USB Root Hub entries and run scan for hardware changes. The second one tried brought the PS Audio Directstream's entries back to life. Probably a safer way now that I know this would be to uninstall the driver before the major updates.
      My ComputerSystem Spec

  4.    23 Jan 2017 #4

    Well you still haven't said what DAC it is, but with my DAC I've never have any issues with any Windows 10 updates whatsoever. And I've got all the latest updates. Current Windows version is 1607 (build 14393.693).

    Anyway glad to see you solved it.

    Peace

    Oh, and can you mark this as solved so we don't waste time typing in suggestions when the issue is actually solved. Thanks, would be a courtesy to others.
      My ComputerSystem Spec

  5.    23 Jan 2017 #5

    It's in my last post, next to last line.
      My ComputerSystem Spec


 

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