I built my computer about a year ago and the sound has worked fine till today when i decided to do some cable management. I believe that everything is hooked up correctly but when i turn on my computer i get no sound. I have my speakers connected to the back ios? plate to the light green input. Every now and then i get a popping sound from the speakers but no sound from anything else. Also when i plug them in and take them out i get a buzzing or cracking sound.