Creative Labs Gigaworks S750 Computer Speakers "speaker audio lower rest" Questions

...audio in my control panel and under advanced settings set it for 5.1 surround. I checked to see that the volume sliders were full for all speakers. It should be noted that while playing an MP3 with ...

...speaker system was conected through a converter to the outlet. Now, the problem consists of 3 out of the 7 speakers now have a white noise (which means are not burned out): the front and the left and ...