I am running Windows 7 Ultimate x86 on my PC, the sound card is an ES1371/ES1373 which has stopped working and giving a Code 12 in Device Manager. Then on the desktop in the task bar the Speaker Icon has a Red X on it and says that No Audio Output Device is Installed. I have deleted the driver and reinstalled it, even changed audio cards to see if that was the problem, I've updated the BIOS to the latest version, ran Defrag and checked the system for errors. The system board is a Gigabyte GA-K8M800-8237. I have fought with this issue for 3 days trying to rectify the problem to no avail. It just does not make sense that there was sound and now there is not. As I reboot the PC I do hear a pop come from the speakers but that is the end of any sounds. I have also checked in Administrator Tools to make certain That Windows Audio is set to Automatic. Does anyone know a solution?