When I updated to Windows XP Service Pack 3, I suddenly lost the sound to my computer. According to the Device Manager, there are no conflicts. I've updated my sound card drivers. In the "Sound and Audio Devices" section of the Control Panel, I have tried the following settings as the default "Sound Playback" device and neither of them work: - Realtek HD Audio - C-Media Wave Device I've made sure the cables are fitting securely in the back of the PC. I've made sure nothing is "muted" in the Master Volume controls And I've went into the Registry and eliminated any multiple lines associated with "midi" or "wave" found in the following location (HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\DRIVERS 32\) How can I get the sound working again on my PC?