Windows 8 and 8.1 Forums


VirtualBox PCM_in Problem with Windows 8

  1. #1


    UK
    Posts : 2
    Windows 7 32 bit

    VirtualBox PCM_in Problem with Windows 8


    Click image for larger version
    I'm trying to run Windows 8 in VirtualBox on my Windows 7 PC. However, every time I start the virtual machine, I am greeted with this message.

    Audio continues to work on both the host and guest OS. What is the problem and how can I fix it?

    Thanks in advance!

      My System SpecsSystem Spec

  2. #2


    Posts : 1,851
    8250 x86 + 7 SP1 x86 + Ubuntu 12.04 LTS x86


    I would simply install the latest available driver in the host operating system and see how it goes.

    If Realtek: Realtek

    There may be some interesting details if you click the arrow thing to show them. If you'd like, you're welcome to post a screenshot of it showing that too.
      My System SpecsSystem Spec

  3. #3


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    There is no real problem. Just check the box "Do not show this message again". I got that message too and ignored it - no problem.
      My System SpecsSystem Spec

  4. #4


    UK
    Posts : 2
    Windows 7 32 bit


    Thanks for replying GMan and whs!

    Here's a detailed screenshot of the warning. It appears that the problem is something to do with the host's audio system:

    Click image for larger version

    I use the standard Microsoft HD Audio drivers and they are up to date already, might it be beneficial to install the Realtek drivers instead?
      My System SpecsSystem Spec

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