So, I just received this Compaq evo n600c that I got from e-bay...everything seems okay...except that i threw in a dvd into the player and no sound comes out. I checked everything that I could think of and and all of the sound is on on the computer. I emailed the seller and they said that the speakers were working when they received it....so I have no idea what else I could do. I think the speakers are ESS allegro speakers....any advice would be great! Thanks again!