Install and Startup Issues
Make sure that you have the powercord plugged in and that you have payed the electric bill. Normally you can see this by a small lamp on the computer.
This can happen if the monitor is turned off. Make sure you have read the manual of your monitor and turn the monitor on before you start the game.
This can happen when it takes too long to connect to the server. Usually this is only the first time you attempt the connection, as the game needs to load all the data into your computers memory from your harddrive before you can start playing.
In the settings menu you can set different values for music, voices and game-sound.