Multimedia Class Scheduler


  1. zikje
    Posts : 3
    Windows 7
       New #1

    Multimedia Class Scheduler


    I have an audio problem. My Audio service isn't started. In order to do that 3 other services need to be started. I've checked those: only Multimedia Class Scheduler isn't started. When I want to do that manually, it gives an error saying he can't find the file....

    Does anyone know what to do, or which file I might need?
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  3. torrentg
    Posts : 5,747
    7600.20510 x86
       New #2

    Open an elevated command prompt, then type the following, or copy and paste:

    sfc /scannow

    That should replace the missing file if it is indeed missing.
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  4. torrentg
    Posts : 5,747
    7600.20510 x86
       New #3

    It is also possible to run audio without the mutimedia class scheduler active at all. Here's how:

    Go into regedit, HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Audiosrv
    and in the DependOnService remove all entries except RpcSs and then restart your computer.

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  6. zikje
    Posts : 3
    Windows 7
    Thread Starter
       New #4

    Thx, I will try that when I get home.
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  7. zikje
    Posts : 3
    Windows 7
    Thread Starter
       New #5

    I tried both options; none of them worked . I still get the missing-file error, and in the second solution the audio service still won't start.
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  8. Teerex
    Posts : 686
    Windows 7 x64 Ultimate SP1
       New #6

    Save this text as a registry file, and merge it with the Registry. This should take care of it.

    HTML Code:
    Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile]
"NetworkThrottlingIndex"=dword:0000000a
"SystemResponsiveness"=dword:00000014

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks]

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Audio]
"Scheduling Category"="Medium"
"SFIO Priority"="Normal"
"Background Only"="True"
"Priority"=dword:00000006
"Clock Rate"=dword:00002710
"GPU Priority"=dword:00000008
"Affinity"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Capture]
"Scheduling Category"="Medium"
"SFIO Priority"="Normal"
"Background Only"="True"
"Priority"=dword:00000005
"Clock Rate"=dword:00002710
"GPU Priority"=dword:00000008
"Affinity"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Distribution]
"Scheduling Category"="Medium"
"SFIO Priority"="Normal"
"Background Only"="True"
"Priority"=dword:00000004
"Clock Rate"=dword:00002710
"GPU Priority"=dword:00000008
"Affinity"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Games]
"Scheduling Category"="Medium"
"SFIO Priority"="Normal"
"Background Only"="False"
"Priority"=dword:00000002
"Clock Rate"=dword:00002710
"GPU Priority"=dword:00000008
"Affinity"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Playback]
"Scheduling Category"="Medium"
"SFIO Priority"="Normal"
"Background Only"="False"
"Priority"=dword:00000003
"BackgroundPriority"=dword:00000004
"Clock Rate"=dword:00002710
"GPU Priority"=dword:00000008
"Affinity"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Pro Audio]
"Scheduling Category"="High"
"SFIO Priority"="Normal"
"Background Only"="False"
"Priority"=dword:00000001
"Clock Rate"=dword:00002710
"GPU Priority"=dword:00000008
"Affinity"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Window Manager]
"Scheduling Category"="Medium"
"SFIO Priority"="Normal"
"Background Only"="True"
"Priority"=dword:00000005
"Clock Rate"=dword:00002710
"GPU Priority"=dword:00000008
"Affinity"=dword:00000000
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