Replace the Home Link after accidentally deleting it.  The top or first position in mainmenu is the Frontpage.  This component requires the ID = 1 or it will mess up the pathway.

Open Menu Manager - admin | Menu | Menu Manager | mainmenu

1. At the top right click on the New button.
2. Select Component.
3. Name it EG:Home2.
4. Select Frontpage from the list of components.
5. Select Publish.
6. Save.
   

Open the Joomla DB in phpMyAdmin or other SQL editor.

1. Find jos_menu and click it.
2. Select the Browse tab to display all menu items.
3. Find the ID column.
4. Find whatever has the value of 1.
5. Change it to a number that is not there EG:1234.
6. Find Home2 and record the ID.
7. Give it the ID = 1.
8. Change the menu item that used to have ID = 1 to whatever ID Home2 had.
9. Save.
   

Open admin | Menu | Menu Manager | mainmenu

1. Move Home to the first position at the top.
2. Click on the Home link to open Frontpage parameters.
3. Rename Home2 to Home.
4. Configure the Frontpage parameters.
5. Save.