I decided to perform a SYSTEM Backup via the admin of my website at 4:13am, even though I'm not so techy with Magento. It kept showing 'Please Wait' all the while. I went to bed, woke after 6hours and it was still the same. I left it for a long while till around 11:30pm and it was still showing 'Please Wait'. While it was performing the backup, I couldn't access both the frontend and backend of the website.
As I wasn't sure of what to do to bring the website back alive, I stopped the Backup at about 11:40pm by typing a different web address into the URL. Having done that, nothing seems to have changed and I still can't access both the backend & frontend.
Please I need some advice on what to do. Please do let me know if you require more clarification.