I know this question was asked a lot before but I tried some of the solutions which were given and nothing worked..
I have downloaded MySQL Workbench 6.1 on my windows 7 x64 and now as I want to start and do a simple DB I set a new MySQL Connection and let it as default the Hostname, port and the username I just set the name of the connection. In the beginning it was showing down in the action output that Could not connect.Server may not be run and in the msg part it was written
Can't connect to MySQL server on '127.0.0.1' (10061)
Can't connect to MySQL server on '127.0.0.1' (10061) (2003)
Looks like the mysql server is not started.
Look to the official documentation of MySQL how you can start a service under windows.
Install the server as a service using this command: C:> "C:\Program Files\MySQL\MySQL Server 5.5\bin\mysqld" --install