MySQL database server service fails to start

[eluser]iluvcode81[/eluser]
Am still finding my way through Codeigniter. Now, I recently downloaded and installed MySQL Server 5.1 and installed it. It prepared configuration I had chosen well, wrote the .ini file well and upon reaching Star Service it failed. my root password is fine and the port it uses has not been firewalled. I then used the Server instance configuration wizard to set it up.I don't know how to go about it. Any clue?