I have tried everything
, including plugging headphones into the back, into the "mic" jack, and directly into the CD player. I've tried 2 sets of speakers, the monitor speakers, enable/disable in the Bios, re-install the software driver ... everything. I've gone through everything suggested on the HP site for "No Sound" issues. I've even bought a sound card but there's no expansion slot for it. The sound card has 2 cut-outs and the slot in my computer is the same as the one that my video card plugs into (PCI Express x16) - 1 cut-out. Sorry, I don't know what they're called, but the PCI sound card I bought will not fit. That's when I realized that my sound is integrated. This making me nuts.