To Start Stop and Restart a IIS Web Server from the command line use the following commands:
STOP: From the command prompt, type net stop WAS and press ENTER; type Y and then press ENTER to also stop W3SVC.
START: To start the Web server, type net start W3SVC and press ENTER to start both WAS and W3SVC
Some Alternate Commands:
STOP: To stop IIS iisreset /stop
START: To start IIS iisreset /start
STATUS: To check the status of IIS iisreset /status