你可以尝试强行删除VS2012及其所有组件http://support.microsoft.com/kb/2771441#Force

You could try forcibly removing VS2012 and all its components http://support.microsoft.com/kb/2771441#Force

1. Download the setup application you used to originally install Visual Studio 2012. If you installed from media, please insert that media.

2. Open a command prompt.

3. Click Run on the Start menu (Start + R).
    a.  Type cmd and press OK (Enter).
    b.  Type in the full path to the setup application and pass the following command line switches: /uninstall /force
    Example: D:\vs_ultimate.exe /uninstall /force

4. Click the Uninstall button and follow the prompts.