以前在遇到安装正确的声卡驱动以后，在控制面板的声音和音频设置依然显示灰色问题，这种现象有可能是windows audio服务丢失，或者此服务被禁用没有启动。但更多种可能就是，声卡驱动安装不正确，下文仅提示如果windows audio服务丢失的解决方法。
如果查找是windows audio服务丢失，判断是否为windows audio服务引起上述声卡不能用问题的方法是在控制面板－管理工具－服务中查找是否有windows audio服务并查看是否已自动启动？
解决方法如下： 1、将下面的文件复制到文本文件中，保存后改名为Audio.reg Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AudioSrv] "DependOnService"=hex(7):50,00,6c,00,75,00,67,00,50,00,6c,00,61,00,79,00,00,00,\ 52,00,70,00,63,00,53,00,73,00,00,00,00,00 "Description"="管理基于 Windows 的程序的音频设备。如果此服务被终止，音频设备及其音效将不能正常工作。如果此服务被禁用，任何依赖它的服务将无法启动。" "DisplayName"="Windows Audio" "ErrorControl"=dword:00000001 "Group"="AudioGroup" "ImagePath"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,\ 74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,\ 00,76,00,63,00,68,00,6f,00,73,00,74,00,2e,00,65,00,78,00,65,00,20,00,2d,00,\ 6b,00,20,00,6e,00,65,00,74,00,73,00,76,00,63,00,73,00,00,00 "ObjectName"="LocalSystem" "Start"=dword:00000002 "Type"=dword:00000020 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AudioSrv\Parameters] "ServiceDll"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,\ 00,74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,\ 61,00,75,00,64,00,69,00,6f,00,73,00,72,00,76,00,2e,00,64,00,6c,00,6c,00,00,\ 00 "ServiceDllUnloadOnStop"=dword:00000001 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AudioSrv\Enum] "0"="Root\\LEGACY_AUDIOSRV\\0000" "Count"=dword:00000001 "NextInstance"=dword:00000001
2、双击刚刚创建并保存的audio.reg文件，并重启机器就OK了。
