参考：
系统太慢，实在搞不清是哪里的问题，祭出重装大法
需要安装的工具还真多，先装主要的吧。VS2013, SQL SERVER 2012，搞定。。
连个数据库试试，出错了：
A connection was successfully established with the server, but then an error occurred during the login process. (provider: SSL Provider, error: 0 - The message received was unexpected or badly formatted.) (Microsoft SQL Server, Error: -2146893018)
怎么会这样，安装没有问题，重装试试。。。老样子。。
放狗搜一下，简单三步
1. Uninstall .Net framework 4.5.1
2. Install .NET Framework 4.5.2
3. Uninstall and then re-install Visual Studio 2012/2013 (repair does not work)
重装4.5.2之后问题解决，貌似不用重装VS^_^
