[edit] Troubleshooting.When things go wrong.
First of all, how do you tell that everything is allright wich most of the times means that the server is running correctly?
You open on MySQL Administrator.If you manage to connect successfully you will see "MySQL Server is running" in the "Server Information" area in the left side menu.
Otherwise, you will get a similar message to this:
Btw, you also want to check your firewall settings if you all of a sudden expericen problems starting the server, it happened to me and found out that my firewall was blocking the server, so pay attention to everything,including such an unexpected case.
Another thing that you want to look out for is this:
go to configure-service mode which can be done by opening MySQL Administrator and while you get this screen:
hold Ctrl down and click on Cancel which turns into a Skip button, to avoid having to enter your user & pass (in this tutorial these being "root" with no pass assigned) and to be taken to the config area.
This will allow you to see if an instance of the server is running and if not,to start it.
| 
