Did the sound ever work? If so, what changed? The fact that Device Manager reports a problem means it's probably not your speakers. What problem does it report?
I have tried everything I can to get sound to work on this system. mciwave.drv just won't install. Device manager says there are problems with my sound card. I even tried a different card, and changed slots!!
I have removed, added, reinstalled, uninstalled drivers and software, all to no avail.
Can someone please tell me how to get my sound back?