2012CAD安装失败 安装日志如下：请大神来帮忙
2016/11/20:22:36:34 Administrator WEIC-20161117ZX === Setup started on WEIC-20161117ZX by Administrator ===
2016/11/20:22:36:34 Administrator WEIC-20161117ZX Launch
2016/11/20:22:37:37 Administrator WEIC-20161117ZX === Setup ended ===
2016/11/20:22:36:35 Administrator WEIC-20161117ZX === Setup started on WEIC-20161117ZX by Administrator ===
2016/11/20:22:36:35 Administrator WEIC-20161117ZX Launch
2016/11/20:22:37:39 Administrator WEIC-20161117ZX PageOpen LaunchDialog
2016/11/20:22:37:56 Administrator WEIC-20161117ZX PageOpen LicenseDialog
2016/11/20:22:38:03 Administrator WEIC-20161117ZX PageOpen ProductInfoDialog
2016/11/20:22:38:51 Administrator WEIC-20161117ZX PageOpen ProductSelectionDialog2
2016/11/20:22:39:25 Administrator WEIC-20161117ZX PageOpen FullProgressDialog
2016/11/20:22:39:25 Administrator WEIC-20161117ZX Installing .NET Framework Runtime 4.0: D:\安装包\AutoCAD_2012_Simplified_Chinese_Win_32bit\3rdParty\NET\4\wcu\dotNetFramework\dotNetFx40_Full_x86_x64.exe /q
2016/11/20:22:39:57 Administrator WEIC-20161117ZX Install .NET Framework Runtime 4.0 Failed Installation aborted, Result=1603
怎么安装，我安装了，但是提示说我电脑已经有相同版本或更高版本了
追答把电脑上的net卸载了，重新安装一下
追问不好意思，我是电脑小白，电脑上这个net一般安装在哪里
追答开始——控制面板——卸载程序
