Windows 10: HDMI audio disappears after TV power off or change source Solved

  1.    16 Nov 2015 #1

    HDMI audio disappears after TV power off or change source

    Ever since I updated to Windows 10, I've been having this issue.
    On computer start up with the TV on and set to the computer source, it works fine. As soon as we switch the TV source or turn the TV off we lose the audio when we go back to the computer source. The Philips TV I use as my monitor disappears from the available sound sources, and I have a red x in the volume setting on the task bar.
    Rebooting the computer is the only way I've found to bring the sound back.
    This is the exact same computer and TV I used with no issues for over a year before upgrading to Windows 10.

    I have installed the latest realtek audio driver listed on this site. I have used the ACER care centre to look for updates, but it says there are none. I've also tried switch out from the realtek to the standard windows driver, but nothing has solved the problem.

    I have an ACER XC-605 media PC.
    Operating system : ,Microsoft Windows 10 Home 64-bit
    Processor : ,Intel(R) Core(TM) i3-4130 CPU @ 3.40GHz
    Memory : ,6GB
    Graphics device : ,Intel(R) HD Graphics 4400
    Audio device 1 : ,Intel(R) Display Audio
    Audio device 2 : ,Realtek High Definition Audio

    Any suggestions?
      My ComputerSystem Spec

  2.    24 Nov 2015 #2

    Solved this issue today. It turned out that my BIOS wasn't up to date, even tho I have the Acer Care Centre installed. The Acer Software doesn't include updating the bios, I guess. I had to update it manually.
    So, even though I had the sound and video drivers up to date, with a 2 year old bios, the issue persisted.

    Updating the bios isn't necessarily easy though, and it is fairly easy to cause major problems instead of solving them if you make a mistake. I recommend getting someone who is knowledgeable enough to update the bios if you are at all unsure of it yourself.
      My ComputerSystem Spec


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