In order to configure Magento to work with a new domain, you should:
- Edit the Magento database.
Go to your cPanel > phpMyAdmin. Click on the Magento database from the menu on the left, find the table called core_config_data and click on it.
Click the Browse tab and edit the first two fields:
by clicking the pen icon in front of them. Replace your old domain name with your new one and click the Go button to save the change.
Clear the Magento cache.
The Magento cache folder is located in your Magento installation directory > /var/cache. To clear the cache, delete the folder and create it again.