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一个关于声卡识别的问题

环境为Windows XP SP2, 声卡realtek hd audio， 似乎是nvidia的主板

症状比较特别， 是偶然卸了某驱动后发现很多硬件不能用了， 打开设备管理器发现dvd-rom, 声卡等都有黄色叹号， 另外还有一个"Plug and Play Software Device Enumerator" 也是这样。

一开始想用"卸载-重新识别"的方法， 但是那个"Plug and Play Software Device Enumerator"卸掉便一去不复返了。 一开始我没在意， 全心折腾声卡， 但是总是不行， 后来在网上艰难搜索才发现问题就出现在那个"Plug and Play Software Device Enumerator"上。

网上有个从系统目录copy出inf, sys, dll个一个文件， 稍微修改并利用它们安装一个这个硬件的方法。 我没试成功（后来发现是没理解好说明）。 之后在
http://www.softwaretipsandtricks.com/forum/windows-xp/7021-no-sound-says-no-audio-device-but-drivers-there-enabled-working-properly-5.html找到了一种解法， 原文加翻译如下：

1. From Device Manager (be sure to select View/Show hidden devices), find the 'ISAPNP Read Data Port' device from the System Devices list. (Of note: once I successfully repaired this problem, this device no longer appears.)
在设备管理器中（注意选上查看->显示隐藏的设备。（译注：似乎不选也可））找到ISAPNP Read Data Port这个设备（当成功进行下面操作后， 这个设备将不再存在（译注：成功后会由Plug and Play Software Device Enumerator取而代之， 也就是说， 问题应该是对这个硬件的识别问题））

2. Right click the ISAPNP device, and select "Update Driver"
右击那个设备，选择"更新驱动程序"

3. Select "Install from a list or specific location"
选择"从列表或指定位置安装"

4. Select "Don't search. I will choose the driver to install."
选择"不要搜索， 我要自己选择要安装的驱动程序"

5. The step I left out on prior trials: UNSELECT "Show Compatible Hardware"
不要选中"显示兼容硬件"

6. Be sure that "(Standard System Devices)" is selected under Manufacturer.
厂商选择"(标准系统设备)"

7. Under Model, scroll down until you see "Plug and Play Software Device Enumerator". Select this item, and select "Next>".
设备选Plug and Play Software Device Enumerator， 单击下一步

8. You will receive some frightening error message that you should probably disregard.
你将会看到一个警告框， 忽略她。

9. Complete the installation of the driver.
完成安装。

经过实验， 这个方法确实可行， 至少是对我的机器配置。
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