If IIS is not installed on your computer, you can install it as follows: 1. Open Control Panel, select Programs and Features, and then click Turn Windows Features On or Off. 2. In the pop-up window, find Internet Information Service (IIS) and select it. 3. Click the "OK" button and wait for the installation to complete. 4. After installation, open a browser and enter "localhost" or "127.0.0. 1". If the welcome page of IIS appears, the installation is successful. If IIS cannot be installed in the above steps, you can try other installation methods, such as using WindowsServerManager or PowerShell command line installation.