SharePoint Product Configuration Wizard failed while upgrading SharePoint

Failed to upgrade SharePoint Products

One or more configuration settings failed. Completed configuration settings will not be rolled back.

Solution:-

Please first verify that your SQL server is connecting in a right way. If it’s giving error like this 

Please follow these steps

          1-   Goto run (winkey + R)

          2-   Write “services.msc”

          3-   Then goto to the SQL server like I have SPSERVER
 

            4-   Right click on this service and start this service if it’s not running already

          5-   Then again go to the SQL and try to connect the server instance it will surely connect