Okay, click start, right click on computer and click manage, in the new window, click Device Manager, which is located under system tools. Go to the sound, video and game controllers, right click, and click scan for hardware changes, if there is no luck there. right click on the correct audio device and select update. If that doesn't work. Then, uninstall the drive and restart the computer, if it detects it but still no audio... it might be a hardware related problem, but one last thing you could try is updating the audio driver from dell.