WampServer

Initially I did not have a password set for mysql after installing wampserver. I was able to access phpmyadmin. After setting a mysql password in mysql console, I could not access phpmyadmin, getting the above 404 error message. I have the same password set in config.inc.php Something is configured wrong but I don't know what or where to look. Appreciate and helpful suggestions.

I have re-installed wampserver2.2c-x64. Post install, the server is offline. When I choose the put online option I get this:
Could not execute menu item(internal error)[Exception] Counld not perform service action: The service has not been started
What could be causing this?

I downloaded the latest version from this site and can access localhost. I have set the password in config.inc.php and the client section of my.ini but I can't access phpmyadmin getting this message:
You don't have permission to access /phpmyadmin/ on this server.