Cannot start Website in IIS - W3SVC running

First verify that the World Wide Web Publishing Service is installed and not disabled. [Source:MSDN]

Right-click My Computer on the desktop, and then click Manage.

Expand the Services and Applications node, and then click the Services node.

In the right pane, locate the World Wide Web Publishing Service.

If the World Wide Web Publishing Service is not displayed in the list of services installed, follow the steps in the procedure below to install it.

If the World Wide Web Publishing Service is displayed but has a status other than Started, continue with the steps below to start it.

Right-click World Wide Web Publishing Service, and then click Properties.

Verify the Startup Type is Automatic and the Service status is set to Started.

Click Apply, and then click OK.

To install the World Wide Web Publishing Service

On the Start menu, select Settings, Control Panel, and then click Add or Remove Programs

Click Add/Remove Windows Components.

In the Components list, select the Application Server check box, and then click Details.

Select Internet Information Services Manager, and then click Details.

Select World Wide Web Service, and then select the check box.

Click OK two times to return to the Components list, and then click Next.

Click Finish when the IIS service is installed.

Here are the quicker steps for restarting W3SVC:

1. Right click on the bar on the bottom of the screen, observe a menu pops up, then choose Task Manager
2. Choose tab Services
3. Find the W3SVC service under Name
4. Right click that service and choose start