Use a SQL commands like this:
mysql -u user -p -e 'Your SQL Query Here' database-name
to figure out what users are accessing your db.
In the results, did you only see localhost and 127.0.0.1 for the host? This would mean that only these two hosts are allowed for access. you can try:
GRANT ALL PRIVILEGES ON *.* TO 'root'@'myIPaddress'
and don't forget to follow that with
FLUSH PRIVILEGES
