

Since sound loss was systemic, I checked BIOS and it had sound disabled, so I enabled it, but suspect this is for intergated motherboard sound. 'Hardware' tab has all devices enabled and working properly. 'Audio' & 'Voice' tabs, have SB X-Fi Audio selections as default devices. On Volume tab, the 'Device Volume' & ' Speaker Settings' areas are greyed out.

Opened 'Sound and Audio Devices Properties' control panel. Went to Creative & Nvidia and got latest drivers and installed OK. Tried to go back to the restore point, but system said that there was a problem and it could not restore my system to the restore point and no action was taken. Lost audio & screwed up video, speaker icon in system tray disappeared. Created system restore point, then installed audio & video drivers from Microsoft Update.
