How to disable the command prompt under win7 system?

1. First, we simultaneously press the win+R shortcut on the win7 Ultimate computer keyboard to open the computer's running window. In the open running window, we enter gpedit.msc and click Enter, so that we can open win7. The Group Policy Editor window for the Ultimate PC.
2. In the opened Group Policy Editor window, we click to expand the "User Configuration" <quo;—“Management Module"—“System” in the right window In, after we find in the right window and double-click the "block access to the command prompt" option.
3. In the edit window that opens, we change the default setting to Enabled, then click OK to save.