A nice article on getting Windows 7 to allow Remote Management

https://technet.microsoft.com/en-us/magazine/ff700227.aspx

 Key steps are:

1. Start Powershell as Admin
2. type: get-service winrm
3. type: Enable-PSRemoting 

 Afterwards, the WinRM service should be running and you should have an enabled firewall rule for WinRM, you can verify that the service is running by typing...

• get-service winrm | format-list