I bought a used, Medion-built PC several months ago, and haven't had any problems but one: it won't make a sound! I have tried everything I can think of to get it to do so (aside from buying a sound card), including OS (windows xp) settings and BIOS settings. The motherboard has onboard audio, and the person I bought it from said he had installed a dedicated card as well, which he removed before selling the computer to me, so perhaps that is affecting it (though, again, I have tried messing with the BIOS settings). So, I basically need to get the onboard audio working, or determine that it's totally screwed and I need to buy a sound card. Any advice would be greatly appreciated, and please let me know what other info would be helpful.