相关疑难解决方法(0)

我现在已经安装了Docker工具箱,我收到了所有错误:

Get http://127.0.0.1:2375/v1.20/version: dial tcp 127.0.0.1:2375: ConnectExtcp: No connection could be made because the target machine actively refused it..
* Are you trying to connect to a TLS-enabled daemon without TLS?
* Is your docker daemon up and running?

docker version 输出:

Client:
 Version:      1.8.1
 API version:  1.20
 Go version:   go1.4.2
 Git commit:   d12ea79
 Built:        Thu Aug 13 02:49:29 UTC 2015
 OS/Arch:      windows/amd64
Get http://127.0.0.1:2375/v1.20/version: dial tcp 127.0.0.1:2375: ConnectEx tcp: No connection could be made because the target machine actively …

我已从网站下载了 docker Desktop，但无法打开安装程序。我的操作系统是Windows 7。在Windows 7上安装docker Desktop需要哪些步骤？