How to implement mstsc for remote desktop connection on win7?

First of all, the method of opening in WINDOWS 7 is as follows:
Step 1: Right-click on the desktop "Computer" and select "Properties".
Step 2: Select the "Remote" tab in the system properties window that pops up.
Step 3: Find "Remote Desktop" in the remote tab, check "Allow connections to computers running any version of remote desktop" or "Only allow connections to remote desktop computers that use network-level authentication" to confirm. Complete the enablement of the remote desktop connection function under Windows7.
If mstsc still cannot be realized,
consider whether port 3389 is released. The processing steps are as follows:
1. Port 3389 is not opened: [Start] menu-settings-control panel-system-remote properties-hook up: allow users to remotely Connect to this computer.
2. The service is not enabled: [Start] Menu-Settings-Control Panel-Administrative Tools-Services-Find: Terminal Services Service: Change to "Started" status.
3. If the firewall has opened ports and services, but still cannot connect, it may be blocked by the firewall: turn off the firewall or add port 3389 and allow