今天在安装.NET Framework 4.0，安装了半天结果提示未安装成功,提示原因是服务未启动了，error code: (0x80070643), "安装时发生严重错误 "

贴出错误代码，请具有相同错误代码在朋友参考 代码如下::copyright: 2009 Microsoft Corporation. All rights reserved. Terms of Use. OS Version = 5.1.2600, Platform 2, Service Pack 3OS Descr iption = WinXP – x86 Professional Service Pack 3CommandLine = D:/d6d82a1105eaa9e6c52e05c24