Have an EVGA nForce 780i SLI FTW motherboard. Runnnig on XP SP3. Audio running fine until tried to update driver. Now does not work! Have deleted all files and tried installing from CD supplied, folder shows in program files in explorer but not on program list. Also tried downloading from EVGA with same result, system recognises hardware in all cases but says no driver installed and whatever I try to do the driver is just not reconised.