安装vs2010时很麻烦，特别是你电脑里又安装了vs2005时，我从网上查看的是大部分的人都是重装之后才安装的，我推荐大家使用iobituninstaller卸载，可以直接卸载注册表，很方便的。下面这个我是从网上copy过了的，我卸载之后成功安装了vs2010，但是你可能会发现下面的这些你电脑里并不是都有，我的建议是没有的就不卸载，相似的也不卸载。

安装vs2010我的安装是别人注册之后的安装包，所以我也不是很清楚如何注册

1. Remove "MSDN Library for Visual Studio 2008 Beta"
2. Remove "Microsoft SQL Server Compact Edition 3.5"
3. Remove "Microsoft SQL Server Compact Edition 3.5 Design Tools"
4. Remove "Microsoft SQL Server Compact Edition 3.5 for Devices"
5. Remove "Microsoft Visual Studio Performance Collection Tools"
6. Remove "Windows Mobile 5.0 SDK R2 for Pocket PC"
7. Remove "Windows Mobile 5.0 SDK R2 for Smartphone"
8. Remove "Crystal Reports 2007"
9. Remove "Visual Studio Asset System"
10. Remove "Microsoft Visual Studio Web Authoring Component / Microsoft Web Designer Tools"
11. Remove "Microsoft Visual Studio 2005 Tools for the 2007 Microsoft Office System Runtime"
12. Remove "Microsoft Visual Studio 2005 Tools for the 2007 Microsoft Office System Runtime Language Pack" (non-English editions only)
13. Remove "Microsoft Visual Studio Tools for Office Runtime 3.0"
14. Remove "Microsoft Document Explorer"
15. Remove "Microsoft Document Explorer 2005 Language Pack" (non-English editions only)
16. Remove "Microsoft Device Emulator 3.0"
17. Remove "Microsoft .NET Compact Framework 3.5"
18. Remove "Microsoft .NET Compact Framework 2.0 SP1"
19. Remove ".NET Framework 2.0 SDK"
20. Remove "Microsoft Visual Studio Codename Orcas Remote Debugger"
21. Remove "Microsoft Visual Studio 64bit Prerequisites Beta" (64-bit platforms only)
22. Remove "Microsoft .NET Framework 3.5"