It might be that you should have a Packard Bell screen, in other words, the screen ought be electronically compatible with the computer. I had the same problem with my Hewlett Packard Compaq computer and my Philips screen. I bought a pair of external speakers, plugged them in, and I got sound. The on-screen instructions for my computer talk about adjusting the sound, and I have a little speaker icon on my screen, so it looks as if I could get sound if my screen was a Hewlett Packard model.