Hey ...let me start by saying I am no computer wiz. That being said I have mysteriously lost all sound on my computer. I have done a physical check that also included connecting a completely seperate pair of speakers to see if they were the problem. I have run ad-aware, norton anti-virus, hijack-this etc.. I have re-installed and updated my drivers for my sound (RealTek AC97). I have to admit..I dont know how to tell if I have a sound card or onboard sound though. I have even system restored. Nothing has worked. When my speakers are on they seem to be working, and through media player the graphics "show" that sound is playing..but all I hear is nothing. If I turn my speakers all the way up I can hear static, and when I was updating the drivers the speakers made a popping sound once or twice. Here is some important info about my PC. It is an HP Pavilion a342n w/ 2.60 GHZ pentium 4 processor, 512 MB SDRAM memory, 120 GB Hard Drive, Intel Extreme Graphics 2 w/64MB shared video memory. I have a Viewsonic flat screen monitor which also has speakers...which may cause some conflict?? I have two Polk Audio desktop speakers connected. I dont know what info you need so I just gave you it all. Any help would be awesome...thanks!