.netframework4.0 安装问题，急求，都换5~6遍系统了

.netframework4.0 安装问题，急求，都换5~6遍系统了

谢谢，这问题折腾了几天了，重下载了几个NET Framework 4.0和3.5的文件安装都不行，重装了几个XP的SP3系统也不行，也更新好补丁了，不知道是不是没更新完补丁，只能装Framework 2.0的，出现的问题都一样，以下是日志文件
OS Version = 5.1.2600, Platform 2, Service Pack 3
OS Description = WinXP - x86 Professional Service Pack 3
CommandLine = F:\13b80b7f690f3dfcc5deb735\\Setup.exe /x86 /x64 /ia64 /web
MSI (C:沪绩高啃薨救胳寻供默92;DOCUME~1\ADMINI~1\LOCALS~1\Temp\Microsoft .NET Framework 4 Setup_4.0.30319\netfx_Core_x86.msi) Installation failed. Msi Log: Microsoft .NET Framework 4 Setup_20111202_171318478-MSI_netfx_Core_x86.msi.txt
Exe (F:\13b80b7f690f3dfcc5deb735\SetupUtility.exe) succeeded.
错误志
OS Version = 5.1.2600, Platform 2, Service Pack 3
OS Description = WinXP - x86 Professional Service Pack 3
CommandLine = D:\44e51f38c2c91486edfa0392fd\\Setup.exe /x86 /x64
Using Simultaneous Download and Install mechanism
Operation: Installing
Package Name = Microsoft .NET Framework 4 Setup
Package Version = 4.0.30319
User Experience Data Collection Policy: UserControlled
Number of applicable items: 7
MSI (D:\44e51f38c2c91486edfa0392fd\netfx_Core_x86.msi) Installation failed. Msi Log: Microsoft .NET Framework 4 Setup_20120126_103829984-MSI_netfx_Core_x86.msi.txt
Exe (D:\44e51f38c2c91486edfa0392fd\SetupUtility.exe) succeeded.
Exe Log File: dd_SetupUtility.txt
MSI (D:\44e51f38c2c91486edfa0392fd\netfx_Core_x86.msi) Installation failed. Msi Log: Microsoft .NET Framework 4 Setup_20120126_103829984-MSI_netfx_Core_x86.msi.txt
Final Result: Installation failed with error code: (0x80070643), "安装发严重错误 " (Elapsed time: 0 00:03:37).

2.0卸载 用windows installer清理 清理注册表 重新启 安装候 总进行段滚 失败 求答案 谢