submix8c, thanks for replying! Yep, SOYO is no more. And my apologies, I didn't type the full name of the motherboard -- it is an SY-P41 845PE Lite, which is the same as the one you found, except with 6 PCI slots and no ISA slots. The BIOS doesn't have a setting for PnP OS enable/disable. It does have a setting for APIC ("Advanced Programmable Interrupt Controller") which is currently disabled. Curiously when I run PCI List (utility from EnTech) it lists among the detected PCI devices, an Audio Device on IRQ 5: VENDOR ID - 8086 SUBSYSTEM ID - 4941 SUBVENDOR ID - 434D DEVICE ID - 24C5 IRQ 5 But Windows has not assigned an IRQ in Device Manager -- only memory and I/O ranges. The Associated Error for the exclamation point is always the same as in my original post. These are the files in the driver set, and the Windows sub-folders in which they reside: CMUDA.INF inf/other CMUDA.CAT inf/catalog CMIDS3D.DLL system CMICNFG.CPL system AUDIO3D.DLL system CMUDA.DLL system32 UDAPROP.DLL system32 CMUDA.SYS system32/drivers Below is the INF. As Sfor noted, there are many PCI ID string entries related to other chipsets in the INF, so for brevity I removed the VIA and SiS entries: ; Copyright 1999-2002, C-Media Inc. [Version] Signature="$CHICAGO$" Class=MEDIA ClassGUID={4d36e96c-e325-11ce-bfc1-08002be10318} provider=%ProviderName% LayoutFile=layout.inf, layout1.inf, layout2.inf DriverVer=11/01/2002,5.12.01.0025 CatalogFile=cmuda.cat [SourceDisksNames] 222=%DiskDescription%,,, [SourceDisksFiles] cmuda.sys=222 udaprop.dll=222 cmids3d.dll=222 Audio3D.dll=222 cmicnfg.cpl=222 cmuda.dll=222 [Manufacturer] %MfgName%=C-Media [ControlFlags] ExcludeFromSelect = * [C-Media] ;;; Intel %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&CC_0401 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_1001109D %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_1002109D %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_1003109D %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_1004109D %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_1005109D %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_1006109D %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_1007109D %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_1008109D %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_0A601019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_0A611019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_0A621019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_0A631019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_0A641019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_0A651019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_0A661019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_0A791019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18611019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18621019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18631019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18641019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18651019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18661019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18671019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18681019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18691019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18701019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18711019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18721019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18731019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18741019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18751019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18761019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18771019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18781019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18791019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18801019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18811019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18821019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18831019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18841019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18851019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18861019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18871019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18881019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18891019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_18901019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_A0031019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_A0041019 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_A0051019 %CMI9738.DeviceDesc%=AC97-1, PCI\VEN_8086&DEV_24C5&SUBSYS_80911043 %CMI9738.DeviceDesc%=AC97-1, PCI\VEN_8086&DEV_24C5&SUBSYS_80921043 %CMI9738.DeviceDesc%=AC97-1, PCI\VEN_8086&DEV_24C5&SUBSYS_80951043 %CMI9738.DeviceDesc%=AC97-1, PCI\VEN_8086&DEV_24C5&SUBSYS_80961043 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_A41410FD %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_0B451297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_0B471297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_C3001297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_C3011297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_C3021297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_C3031297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_C3041297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_C3051297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_C3061297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_C3071297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_C4001297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_C4011297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_C4021297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_C4031297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_C4041297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_C4051297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_C4061297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_C4071297 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_030013F6 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_030113F6 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_1005147B %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_00C51565 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_00C61565 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_00C71565 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_00C81565 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_00C91565 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_87001565 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_F6131565 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_F6141565 %CMI9738.DeviceDesc%=AC97-1, PCI\VEN_8086&DEV_24C5&SUBSYS_24C51849 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_05091865 %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_271D270F %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_271E270F %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_271F270F %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_2720270F %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_2721270F %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_2722270F %CMI9738.DeviceDesc%=AC97, PCI\VEN_8086&DEV_24C5&SUBSYS_24C58086 ;;;; DDInstall for C-Media 9738 AC/97 Codec [AC97] AlsoInstall=ks.registration(ks.inf),wdmaudio.registration(wdmaudio.inf) CopyFiles=CMUDA.CopyList, CMUDAProp.CopyList, C3D.CopyList, Audio3D.CopyList AddReg=CMUDA.AddReg, CMUDAProp.AddReg, Mixer.AddReg, Audio3D.AddReg, UDA_NAMES.AddReg [AC97.Interfaces] AddInterface=%KSCATEGORY_AUDIO%,%KSNAME_Wave%,UDA.Interface.Wave AddInterface=%KSCATEGORY_RENDER%,%KSNAME_Wave%,UDA.Interface.Wave AddInterface=%KSCATEGORY_CAPTURE%,%KSNAME_Wave%,UDA.Interface.Wave AddInterface=%KSCATEGORY_AUDIO%,%KSNAME_Topology%,UDA.Interface.Topology [AC97-1] AlsoInstall=ks.registration(ks.inf),wdmaudio.registration(wdmaudio.inf) CopyFiles=CMUDA.CopyList, CMUDAProp.CopyList, C3D.CopyList, Audio3D.CopyList AddReg=CMUDA.AddReg, CMUDAProp.AddReg, Mixer.AddReg, Audio3D.AddReg, UDA-1_NAMES.AddReg, AC97-1.AddReg [AC97-1.Interfaces] AddInterface=%KSCATEGORY_AUDIO%,%KSNAME_Wave%,UDA.Interface.Wave AddInterface=%KSCATEGORY_RENDER%,%KSNAME_Wave%,UDA.Interface.Wave AddInterface=%KSCATEGORY_CAPTURE%,%KSNAME_Wave%,UDA.Interface.Wave AddInterface=%KSCATEGORY_AUDIO%,%KSNAME_Topology%,UDA.Interface.Topology [UDA.Interface.Wave] AddReg=UDA.I.Wave.AddReg [UDA.I.Wave.AddReg] HKR,,CLSID,,%Proxy.CLSID% HKR,,FriendlyName,,%CMUDA.Wave.szPname% [UDA.Interface.Topology] AddReg=UDA.I.Topo.AddReg [UDA.I.Topo.AddReg] HKR,,CLSID,,%Proxy.CLSID% HKR,,FriendlyName,,%CMUDA.Topology.szPname% [CMUDA.AddReg] HKR,,AssociatedFilters,,"wdmaud,swmidi,redbook" HKR,,Driver,,cmuda.sys HKR,,NTMPDriver,,"cmuda.sys,sbemul.sys" HKR,Drivers,SubClasses,,"wave,midi,mixer" HKR,Drivers\wave\wdmaud.drv,Driver,,wdmaud.drv HKR,Drivers\midi\wdmaud.drv,Driver,,wdmaud.drv HKR,Drivers\mixer\wdmaud.drv,Driver,,wdmaud.drv HKR,Drivers\wave\wdmaud.drv,Description,,%CMUDA.DeviceDesc% HKR,Drivers\midi\wdmaud.drv, Description,,%CMUDA.DeviceDesc% HKR,Drivers\mixer\wdmaud.drv,Description,,%CMUDA.DeviceDesc% [CMUDAProp.AddReg] HKCR,CLSID\%CMAudioProperty_CLSID%,,0,%CMAudioProperty_FriendlyName% HKCR,CLSID\%CMAudioProperty_CLSID%\InProcServer32,,0,"%10%\System32\udaprop.dll" HKCR,CLSID\%CMAudioProperty_CLSID%\ProgID,,0,%CMAudioProperty_ProgID% HKCR,CLSID\%CMAudioProperty_CLSID%\VersionIndependentProgID,,0,%CMAudioProperty_VersionIndependentProgID% HKCR,CMAudioProperty,,0,%CMAudioProperty_FriendlyName% HKCR,CMAudioProperty\CLSID,,0,%CMAudioProperty_CLSID% HKCR,CMAudioProperty\CurVer,,0,%CMAudioProperty_ProgID% HKCR,CMAudioProperty.7,,0,%CMAudioProperty_FriendlyName% HKCR,CMAudioProperty.7\CLSID,,0,%CMAudioProperty_CLSID% ;HKR,,EnumPropPages32,,"udaprop.dll, CMAudioPropPageProvider" HKLM,"Software\Microsoft\Windows\CurrentVersion\Control Panel\Cpls",Cmcpls,,"%10%\System\cmicnfg.cpl" HKLM,"Software\Microsoft\Windows\CurrentVersion\Run",Cmaudio,,"RunDll32 cmicnfg.cpl,CMICtrlWnd" [Mixer.AddReg] HKR,"Settings","EnableLegacy", 0x00010001,0x02,0,0,0 HKR,"Settings","JackConfig", 0x00010001,0x05,0,0,0 HKR,"Settings","SpeakerConfig", 0x00010001,0x04,0,0,0 [Audio3D.AddReg] HKCR,Audio3D,,0,Audio3DObject HKCR,Audio3D\CLSID,,0,%Audio3D_CLSID% HKCR,CLSID\%Audio3D_CLSID%,,0,Audio3DObject HKCR,CLSID\%Audio3D_CLSID%\InProcServer32,,0,Audio3D.dll HKCR,CLSID\%Audio3D_CLSID%\InProcServer32,ThreadingModel,0,Apartment [UDA_NAMES.AddReg] HKLM,%MediaCategories%\%UDAGUID.PhoneVolume%,Name,,%UDANode.PhoneVolume% HKLM,%MediaCategories%\%UDAGUID.PhoneVolume%,Display,1,00,00,00,00 HKLM,%MediaCategories%\%UDAGUID.PhoneMute%,Name,,%UDANode.PhoneMute% HKLM,%MediaCategories%\%UDAGUID.PhoneMute%,Display,1,00,00,00,00 HKLM,%MediaCategories%\%UDAGUID.MonoOutSelect%,Name,,%UDANode.MonoOutSelect% HKLM,%MediaCategories%\%UDAGUID.MonoOutSelect%,Display,1,00,00,00,00 HKLM,%MediaCategories%\%UDAGUID.Spdif%,Name,,%UDANode.Spdif% HKLM,%MediaCategories%\%UDAGUID.Spdif%,Display,1,00,00,00,00 HKLM,%MediaCategories%\%UDAGUID.Video%,Name,,%UDANode.Video% HKLM,%MediaCategories%\%UDAGUID.Video%,Display,1,00,00,00,00 HKLM,%MediaCategories%\%UDAGUID.StereoMix%,Name,,%UDANode.StereoMix% HKLM,%MediaCategories%\%UDAGUID.StereoMix%,Display,1,00,00,00,00 HKLM,%MediaCategories%\%UDAGUID.Aux%,Name,,%UDANode.Aux% HKLM,%MediaCategories%\%UDAGUID.Aux%,Display,1,00,00,00,00 HKLM,%MediaCategories%\%UDAGUID.MonoIn%,Name,,%UDANode.MonoIn% HKLM,%MediaCategories%\%UDAGUID.MonoIn%,Display,1,00,00,00,00 HKLM,%MediaCategories%\%UDAGUID.SpdifValid%,Name,,%UDANode.SpdifValid% HKLM,%MediaCategories%\%UDAGUID.SpdifValid%,Display,1,00,00,00,00 [UDA-1_NAMES.AddReg] HKLM,%MediaCategories%\%UDAGUID.PhoneVolume%,Name,,%UDANode.PhoneVolume% HKLM,%MediaCategories%\%UDAGUID.PhoneVolume%,Display,1,00,00,00,00 HKLM,%MediaCategories%\%UDAGUID.PhoneMute%,Name,,%UDANode.PhoneMute% HKLM,%MediaCategories%\%UDAGUID.PhoneMute%,Display,1,00,00,00,00 HKLM,%MediaCategories%\%UDAGUID.MonoOutSelect%,Name,,%UDANode.MonoOutSelect% HKLM,%MediaCategories%\%UDAGUID.MonoOutSelect%,Display,1,00,00,00,00 HKLM,%MediaCategories%\%UDAGUID.Spdif%,Name,,%UDANode.Spdif% HKLM,%MediaCategories%\%UDAGUID.Spdif%,Display,1,00,00,00,00 HKLM,%MediaCategories%\%UDAGUID.Video%,Name,,%UDANode.Video% HKLM,%MediaCategories%\%UDAGUID.Video%,Display,1,00,00,00,00 HKLM,%MediaCategories%\%UDAGUID.StereoMix%,Name,,%UDANode.StereoMix% HKLM,%MediaCategories%\%UDAGUID.StereoMix%,Display,1,00,00,00,00 HKLM,%MediaCategories%\%UDAGUID.Aux%,Name,,%UDANode-1.Aux% HKLM,%MediaCategories%\%UDAGUID.Aux%,Display,1,00,00,00,00 HKLM,%MediaCategories%\%UDAGUID.MonoIn%,Name,,%UDANode.MonoIn% HKLM,%MediaCategories%\%UDAGUID.MonoIn%,Display,1,00,00,00,00 HKLM,%MediaCategories%\%UDAGUID.SpdifValid%,Name,,%UDANode.SpdifValid% HKLM,%MediaCategories%\%UDAGUID.SpdifValid%,Display,1,00,00,00,00 [AC97-1.AddReg] HKR,Settings,DisablePCBeep,0x00010001,1 [DestinationDirs] CMUDA.CopyList = 10,system32\drivers CMUDAProp.CopyList = 10,system32 C3D.CopyList = 10,system Audio3D.CopyList = 11 DefaultDestDir = 11 [CMUDA.CopyList] cmuda.sys [CMUDAprop.CopyList] udaprop.dll cmuda.dll [C3D.CopyList] cmids3d.dll cmicnfg.cpl [Audio3D.CopyList] a3d.dll,Audio3D.dll,,4 Audio3D.dll ;;================= Windows 2000 ==================== ;;============================================================================ ;; AC97 Codec ;;============================================================================ [AC97.NTX86] Include=ks.inf,wdmaudio.inf Needs=KS.Registration,WDMAUDIO.Registration CopyFiles=CMUDA.CopyList, CMUDAProp.CopyList, C3D.CopyList, Audio3D.CopyList AddReg=CMUDA.AddReg, CMUDAProp.AddReg, Mixer.AddReg, Audio3D.AddReg, UDA_NAMES.AddReg [AC97.NTX86.Interfaces] AddInterface=%KSCATEGORY_AUDIO%,%KSNAME_Wave%,UDA.Interface.Wave AddInterface=%KSCATEGORY_RENDER%,%KSNAME_Wave%,UDA.Interface.Wave AddInterface=%KSCATEGORY_CAPTURE%,%KSNAME_Wave%,UDA.Interface.Wave AddInterface=%KSCATEGORY_AUDIO%,%KSNAME_Topology%,UDA.Interface.Topology [AC97.NTX86.Services] AddService = cmuda, 0x00000002, CMUDA_Service_Inst ;;============================================================================ ;; AC97 Codec (TAD-IN) ;;============================================================================ [AC97-1.NTX86] Include=ks.inf,wdmaudio.inf Needs=KS.Registration,WDMAUDIO.Registration CopyFiles=CMUDA.CopyList, CMUDAProp.CopyList, C3D.CopyList, Audio3D.CopyList AddReg=CMUDA.AddReg, CMUDAProp.AddReg, Mixer.AddReg, Audio3D.AddReg, UDA-1_NAMES.AddReg, AC97-1.AddReg [AC97-1.NTX86.Interfaces] AddInterface=%KSCATEGORY_AUDIO%,%KSNAME_Wave%,UDA.Interface.Wave AddInterface=%KSCATEGORY_RENDER%,%KSNAME_Wave%,UDA.Interface.Wave AddInterface=%KSCATEGORY_CAPTURE%,%KSNAME_Wave%,UDA.Interface.Wave AddInterface=%KSCATEGORY_AUDIO%,%KSNAME_Topology%,UDA.Interface.Topology [AC97-1.NTX86.Services] AddService = cmuda, 0x00000002, CMUDA_Service_Inst [CMUDA_Service_Inst] DisplayName = %CMUDA.SvcDesc% ServiceType = 1 ; SERVICE_KERNEL_DRIVER StartType = 3 ; SERVICE_DEMAND_START ErrorControl = 1 ; SERVICE_ERROR_NORMAL ServiceBinary = %10%\system32\drivers\cmuda.sys [Strings] ProviderName="C-Media Inc." MfgName="C-Media" DiskDescription="C-Media WDM Audio Driver" CMUDA.DeviceDesc="C-Media WDM Audio Device" CMUDA.Wave.szPname="C-Media Wave Device" CMUDA.Topology.szPname="C-Media Mixer Device" CMUDA.SvcDesc = "C-Media WDM Audio Interface" CMI9738.DeviceDesc="C-Media AC97 Audio Device" CMI8738.DeviceDesc="CMI8738/C3DX PCI Audio Device" MediaCategories="SYSTEM\CurrentControlSet\Control\MediaCategories" Proxy.CLSID="{17CCA71B-ECD7-11D0-B908-00A0C9223196}" KSCATEGORY_AUDIO="{6994AD04-93EF-11D0-A3CC-00A0C9223196}" KSCATEGORY_RENDER="{65E8773E-8F56-11D0-A3B9-00A0C9223196}" KSCATEGORY_CAPTURE="{65E8773D-8F56-11D0-A3B9-00A0C9223196}" KSCATEGORY_TOPOLOGY="{DDA54A40-1E4C-11D1-A050-405705C10000}" KSNAME_Wave="Wave" KSNAME_Topology="Topology" CMAudioProperty_CLSID="{201FEC6C-E94E-450c-8ECB-5297957441A6}" CMAudioProperty_FriendlyName="CMAudio WDM Property Component" CMAudioProperty_ProgID="CMAudioPropertyCOM.7" CMAudioProperty_VersionIndependentProgID="CMAudioPropertyCOM" ;; Nodes (non-localizeable) UDAGUID.PhoneVolume ="{0A8C1A87-42B0-11D2-95D2-00C04FB925D3}" UDAGUID.PhoneMute ="{0A8C1A88-42B0-11D2-95D2-00C04FB925D3}" UDAGUID.MonoOutSelect ="{0A8C1AA9-42B0-11D2-95D2-00C04FB925D3}" UDAGUID.Spdif ="{5AEA5794-AA8A-4aaf-AB8B-4854C97B5D90}" UDAGUID.Video ="{32E06BEE-BD20-48b8-9552-E5240EAF05BC}" UDAGUID.StereoMix ="{3EC8502B-5D89-4d2d-A78A-FF45CA18A3B7}" UDAGUID.Aux ="{AF24C5CC-A32D-479f-9FFB-BFD00E135BA9}" UDAGUID.MonoIn ="{51C53816-3407-4BA0-8B4D-B4FCADC65A54}" UDAGUID.SpdifValid ="{D0DF1519-7207-4135-9EFD-934061113FFA}" ;; Nodes (localizeable) UDANode.PhoneVolume ="Phone Volume" UDANode.PhoneMute ="Phone Mute" UDANode.MonoOutSelect ="Mono Out Select" UDANode.Spdif ="SPDIF In" UDANode.Video ="Video" UDANode.StereoMix ="Stereo Mix" UDANode.Aux ="Aux" UDANode-1.Aux ="Aux/Phone" UDANode.MonoIn ="Mono In" UDANode.SpdifValid ="Validity Check" Audio3D_CLSID="{D8F1EEE0-F634-11CF-8700-00A0245D918B}" If more info is needed, I'll be happy to provide.