This article describes how to win7 the 64-bit system to prohibit software installation!
To prevent the Software installation Setup method:
1, click on the keyboard above the Win+r key, so you can pull up ghost Win7 Run dialog box, and then enter the Gpedit.msc command in the running window, open the Local Group Policy Editor.
2, then in the Local Group Policy Editor, expand the following options: Computer Configuration, Administrative Templates, Windows components, Windows Installer, and then double-click to open the Disable Windows Installer option. After entering the edit window, select the "Enabled" option, and then click on the "only for unmanaged Applications" option, select "Always marked", and finally click OK button to complete the setup.
After this setting, no matter who is using your computer can not install the software, of course, you can not install, if you need to install Win7 Pure version of the software "Disable Windows Installer" entry, enter the editing window select "Disabled", you can install!