Delete a site collection by using Central Administration + SharePoint 2010

1. Verify that you have the following administrative credentials:

 To delete a site collection, the user account that is performing this procedure must be a member of the Farm Administrators SharePoint group.

2. On the Central Administration Web site, on the Quick Launch, click Application Management

3. On the Application Management page, in the Site Collections section, click Delete a site collection.

4. On the Delete Site Collection page, in the Site Collection drop-down list, click the down arrow, and then click Change Site Collection.


The Select Site Collection dialog box appears.

5. In the Web Application drop-down list, click the down arrow, and then click Change Web Application.


The Select Web Application dialog box appears.

6. Click the name of the Web application that contains the site 
collection that you want to delete. 


Relative URLs of sites in the site collections of the Web application that you have selected appear on the Select Site Collection dialog box.

7. Click the relative URL of the site collection that you want to delete, and then click OK.

8. Read the Warning section and verify that the site collection information is correct.

9. On the Delete Site Collection page, click Delete.

The site collection that you select is deleted.


If you have any queries/questions regarding the above mentioned information then please let me know,Thanks...