;; The audio inf file for WDM core files. [Version] ;CatalogFile=wdmaudio.cat Signature="$CHICAGO$" Class=MEDIA ClassGUID={4d36e96c-e325-11ce-bfc1-08002be10318} provider=%MSFT% ;LayoutFile=layout.inf, layout1.inf, layout2.inf ;; Device Callouts for swenumed devices [Manufacturer] %MfgName%=Microsoft [Microsoft] %WDM_KMIXER.DeviceDesc% = WDM_KMIXER, SW\{B7EAFDC0-A680-11D0-96D8-00AA0051E51D} %WDM_SYSAUDIO.DeviceDesc% = WDM_SYSAUDIO, SW\{A7C7A5B0-5AF3-11D1-9CED-00A024BF0407} ;; NT Class Install [ClassInstall32.NT] Addreg=MediaReg [MediaReg] HKR,,,,%MediaClassName% HKR,,Installer32,,"MmSys.Cpl,MediaClassInstaller" HKR,,Icon,,"3004" ;; Win98 Registration of WDM Audio Drivers [WDMAUDIO.Registration] AddReg= WDM.AddReg, WDM_W98.AddReg ;CopyFiles= WDM.CopyFiles.Sys, WDM.CopyFiles.Drv, WDM_W98.CopyFiles.Drv DelReg= WDM_W98.DelReg DelFiles= WDM_W98.DelFiles.Sys, WDM_W98.DelFiles.Win UpdateInis= WDM_W98.UpdateInis ;; WinNT Registration of WDM Audio Drivers [WDMAUDIO.Registration.NT] AddReg= WDM.AddReg ;CopyFiles= WDM.CopyFiles.Sys, WDM.CopyFiles.Drv ;; ;; U P D A T E R E G I S T R Y S E C T I O N ;; ;; Registry entries for both NT and Win98 [WDM.AddReg] ;; Add sndvol to the sys-tray HKLM,Software\Microsoft\Windows\CurrentVersion\Run,SystemTray,,"SysTray.Exe" HKLM,%KEY_IOC%\Vol,,, HKLM,%KEY_IOC%\acm,,, HKLM,%KEY_IOC%\Rec,,, HKLM,%KEY_IOC%\MPlay,,, ;; Sysaudio swenum install HKLM,%RunOnce%,"WDM_SYSAUDIO",,"rundll32.exe /N streamci.dll,StreamingDeviceSetup %WDM_SYSAUDIO.DeviceId%,%KSNAME_Filter%,%KSCATEGORY_SYSAUDIO%,%17%\WDMAUDIO.inf,WDM_SYSAUDIO.Interface.Install" ;; Kmixer swenum install HKLM,%RunOnce%,"WDM_KMIXER",,"rundll32.exe /N streamci.dll,StreamingDeviceSetup %WDM_KMIXER.DeviceId%,%KSNAME_Filter%,%KSCATEGORY_MIXER%,%17%\WDMAUDIO.inf,WDM_KMIXER.Interface.Install" ;; Registry entries for Win98 only [WDM_W98.AddReg] HKR,,DevLoader,,"*ntkern,mmdevldr.vxd" ;; Add the wdmaud.sys service HKLM,System\CurrentControlSet\Services\wdmaud,Group,,"Base" HKLM,System\CurrentControlSet\Services\wdmaud,ImagePath,,"\SystemRoot\system32\drivers\wdmaud.sys" HKLM,System\CurrentControlSet\Services\wdmaud,Start,1,03,00,00,00 HKLM,System\CurrentControlSet\Services\wdmaud,Type,1,01,00,00,00 HKLM,System\CurrentControlSet\Services\wdmaud,ErrorControl,1,01,00,00,00 ;; Add the redbook.sys service HKLM,System\CurrentControlSet\Services\redbook,Group,,"Base" HKLM,System\CurrentControlSet\Services\redbook,ImagePath,,"\SystemRoot\system32\drivers\redbook.sys" HKLM,System\CurrentControlSet\Services\redbook,Start,1,03,00,00,00 HKLM,System\CurrentControlSet\Services\redbook,Type,1,01,00,00,00 HKLM,System\CurrentControlSet\Services\redbook,ErrorControl,1,01,00,00,00 ;; Add the stuff to make redbook work. HKLM,System\CurrentControlSet\control\MediaResources\MediaExtensions\shellx\SimpleProperties\WDMAudio,ShellName,,"Digital Audio" ;; Add the sbemul.sys service HKLM,System\CurrentControlSet\Services\sbemul,Group,,"Base" HKLM,System\CurrentControlSet\Services\sbemul,ImagePath,,"\SystemRoot\system32\drivers\sbemul.sys" HKLM,System\CurrentControlSet\Services\sbemul,Start,1,03,00,00,00 HKLM,System\CurrentControlSet\Services\sbemul,Type,1,01,00,00,00 HKLM,System\CurrentControlSet\Services\sbemul,ErrorControl,1,01,00,00,00 ;; Add the swmidi.sys service HKLM,System\CurrentControlSet\Services\swmidi,Group,,"Base" HKLM,System\CurrentControlSet\Services\swmidi,ImagePath,,"\SystemRoot\system32\drivers\swmidi.sys" HKLM,System\CurrentControlSet\Services\swmidi,Start,1,03,00,00,00 HKLM,System\CurrentControlSet\Services\swmidi,Type,1,01,00,00,00 HKLM,System\CurrentControlSet\Services\swmidi,ErrorControl,1,01,00,00,00 [WDM_W98.DelReg] HKLM,System\CurrentControlSet\Services\mmsysmap HKLM,System\CurrentControlSet\Services\kmixer HKLM,System\CurrentControlSet\Services\sysaudio ;; ;; F I L E C O P Y S E C T I O N ;; [DestinationDirs] WDM.CopyFiles.Drv = 10,system32\drivers ; %SystemRoot%\system32\drivers WDM.CopyFiles.Sys = 11 ; %SystemRoot%\system WDM_W98.DelFiles.Sys = 11 ; %SystemRoot%\system WDM_W98.DelFiles.Win = 10 ; WINDOWS WDM_W98.CopyFiles.Drv = 10,system32\drivers ; %SystemRoot%\system32\drivers MS_MPU401.CopyFiles = 10,system32\drivers ; %SystemRoot%\system32\drivers WDM_SYSAUDIO.CopyFiles = 10,system32\drivers WDM_KMIXER.CopyFiles = 10,system32\drivers ;; copied to system32\drivers [WDM.CopyFiles.Drv] wdmaud.sys swmidi.sys gm.dls,gm16.dls portcls.sys stream.sys [WDM_W98.CopyFiles.Drv] redbook.sys sbemul.sys ;; copied to system [WDM.CopyFiles.Sys] wdmaud.drv ksuser.dll ;; ;; D E L E T E F I L E S S E C T I O N ;; ;; Delete from the system directory [WDM_W98.DelFiles.Sys] kmixer.sys ks.sys wdmaud.sys swmidi.sys sysaudio.sys redbook.sys sbemul.sys mssb16.sys USBAUDIO.sys STREAM.sys portcls.sys gm.dls gm16.dls ;; Delete from the 'windows' directory [WDM_W98.DelFiles.Win] WDMAUD.DRV ;; ;; U P D A T E I N I S S E C T I O N ;; [WDM_W98.UpdateInis] system.ini,drivers,"wave*=wdmaud.drv",,1 system.ini,drivers,"midi*=wdmaud.drv",,1 system.ini,drivers,"mixer*=wdmaud.drv",,1 ;; MPU401 Install Section can be called by OEM's to install MS MPU401 driver [WDMAUDIO.MPU401] ;CopyFiles=MS_MPU401.CopyFiles AddReg=MS_MPU401.AddReg UpdateInis=MS_MPU401.UpdateInis [WDMAUDIO.MPU401.NT] ;CopyFiles=MS_MPU401.CopyFiles AddReg=MS_MPU401.AddReg [MS_MPU401.CopyFiles] msmpu401.sys [MS_MPU401.AddReg] HKR,,AssociatedFilters,,"wdmaud" HKR,,Driver,,msmpu401.sys HKR,,NTMPDriver,,msmpu401.sys HKR,Drivers,SubClasses,,"midi" HKR,Drivers\midi\wdmaud.drv, Driver,,wdmaud.drv HKR,Drivers\midi\wdmaud.drv, Description,,%MS_MPU401% [MS_MPU401.UpdateInis] system.ini,drivers,"midi*=mpu401.drv",,1 system.ini,drivers,"midi*=rdmpu401.drv",,1 system.ini,drivers,"midi*=mm16n.drv",,1 system.ini,drivers,"midi*=mm16c.drv",,1 system.ini,drivers,"midi*=mm16w.drv",,1 ;; FDMA install section [WDMAUDIO.FDMA] AddReg=FDMA.AddReg [FDMA.AddReg] ;; Use FDMA HKR,,UseFDMA,1,01,00,00,00 [WDMAUDIO.NOFDMA] AddReg=NOFDMA.AddReg [NOFDMA.AddReg] ;; Use FDMA HKR,,UseFDMA,1,00,00,00,00 [WDMAUDIO.FDMA.NT] AddReg=FDMA.AddReg.NT [FDMA.AddReg.NT] ;; SWEnum Installation Sections [WDM_SYSAUDIO.Interface.Install] AddReg=WDM_SYSAUDIO.Interface.AddReg [WDM_SYSAUDIO.Interface.AddReg] HKR,,CLSID,,%Proxy.CLSID% HKR,,FriendlyName,,%WDM_SYSAUDIO.FriendlyName% [WDM_SYSAUDIO] CopyFiles = WDM_SYSAUDIO.CopyFiles AddReg = WDM_SYSAUDIO.AddReg KnownFiles= WDM_SYSAUDIO.KnownFiles [WDM_SYSAUDIO.NT] CopyFiles = WDM_SYSAUDIO.CopyFiles ; nothing special to add to registry [WDM_SYSAUDIO.KnownFiles] sysaudio.sys=safe [WDM_SYSAUDIO.CopyFiles] sysaudio.sys [WDM_SYSAUDIO.AddReg] HKR,,DevLoader,,*NTKERN HKR,,NTMPDriver,,SYSAUDIO.sys [WDM_SYSAUDIO.NT.Services] AddService = sysaudio,0x00000002, sysaudio_Service_Inst [sysaudio_Service_Inst] DisplayName = %sysaudio.SvcDesc% ServiceType = 1 ; SERVICE_KERNEL_DRIVER StartType = 3 ; SERVICE_DEMAND_START ErrorControl = 1 ; SERVICE_ERROR_NORMAL ServiceBinary = %10%\system32\drivers\sysaudio.sys [WDM_KMIXER.Interface.Install] AddReg=WDM_KMIXER.Interface.AddReg [WDM_KMIXER.Interface.AddReg] HKR,,CLSID,,%Proxy.CLSID% HKR,,FriendlyName,,%WDM_KMIXER.FriendlyName% [WDM_KMIXER] CopyFiles = WDM_KMIXER.CopyFiles AddReg = WDM_KMIXER.AddReg KnownFiles = WDM_KMIXER.KnownFiles [WDM_KMIXER.NT] CopyFiles = WDM_KMIXER.CopyFiles ; nothing special to add to registry [WDM_KMIXER.KnownFiles] kmixer.sys=safe [WDM_KMIXER.CopyFiles] kmixer.sys [WDM_KMIXER.AddReg] HKR,,DevLoader,,*NTKERN HKR,,NTMPDriver,,KMIXER.sys [WDM_KMIXER.NT.Services] AddService = kmixer, 0x00000002, kmixer_Service_Inst [kmixer_Service_Inst] DisplayName = %kmixer.SvcDesc% ServiceType = 1 ; SERVICE_KERNEL_DRIVER StartType = 3 ; SERVICE_DEMAND_START ErrorControl = 1 ; SERVICE_ERROR_NORMAL ServiceBinary = %10%\system32\drivers\kmixer.sys [Strings] ;Non-localized strings ;; ???? These keys weren't used anywhere. Delete? ;;KEY_WARNVER="SYSTEM\CurrentControlSet\Control\SessionManager\WarnVerDLLs" ;;KEY_CHKVER="SYSTEM\CurrentControlSet\Control\SessionManager\CheckVerDLLs" ;;KEY_FIL="SYSTEM\CurrentControlSet\Control\MediaResources\FilterList" KEY_IOC="SYSTEM\CurrentControlSet\Control\MediaResources\InstallOptionalComponents" MSFT="Microsoft" MfgName="Microsoft" RunOnce = "SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce" Proxy.CLSID = "{17CCA71B-ECD7-11D0-B908-00A0C9223196}" KSNAME_Filter = "{9B365890-165F-11D0-A195-0020AFD156E4}" WDM_SYSAUDIO.DeviceId = "{A7C7A5B0-5AF3-11D1-9CED-00A024BF0407}" KSCATEGORY_SYSAUDIO = "{A7C7A5B1-5AF3-11D1-9CED-00A024BF0407}" WDM_KMIXER.DeviceId = "{B7EAFDC0-A680-11D0-96D8-00AA0051E51D}" KSCATEGORY_MIXER = "{AD809C00-7B88-11D0-A5D6-28DB04C10000}" ;Localized strings MediaClassName="Sound, video and game controllers" MS_MPU401="MPU401" WDM_SYSAUDIO.DeviceDesc = "Microsoft Kernel System Renderer" WDM_SYSAUDIO.FriendlyName = "Microsoft Kernel System Renderer" WDM_KMIXER.DeviceDesc = "Microsoft Kernel Audio Mixer" WDM_KMIXER.FriendlyName = "Microsoft Kernel Audio Mixer" sysaudio.SvcDesc = "Microsoft System Audio Device" kmixer.SvcDesc = "Microsoft Kernel Wave Audio Mixer"Download Driver Pack
After your driver has been downloaded, follow these simple steps to install it.
Expand the archive file (if the download file is in zip or rar format).
If the expanded file has an .exe extension, double click it and follow the installation instructions.
Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.
Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
Very important: You must reboot your system to ensure that any driver updates have taken effect.
For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.