I am getting "Error Establishing a Database Connection" -
I am running 4 WP Sites and i have no idea of how they broke because 3 of them still seemed to be 'running' because the homepage was displayed. but if i try to login or click internal pages (ie: about us, contact us, blog etc) it would give me the above 'Database Connection error'
I reinstalled wordpress, on one site and some how get one it up and running - but when i try to navigate to that site it gives me "Already Installed
You appear to have already installed WordPress. To reinstall please clear your old database tables first."
But i can login is no issues there...
cant seem to find the database connections...
please see attached screenshots....


