I've had this Windows 7 (home premium) pc since Nov 2010 (PCS order no 362192) and the sound has been fine until now. Suddenly (no updates/changes beforehand I know of) there's no sound. The soundcard is a creative x-fi titanium PCI express. I checked control panel and the device is the default for playback. Tried to run Creative Audio control panel but got an error message, 'The audio device supported by this application is not detected'. I reinstalled the software from the installation cd but this made no difference. I downloaded the W7 drivers from creative's site but the install failed with message, 'setup is unable to detect a supported product on your system'. Is there anything obvious I've missed? I'm not sure what could have caused this other than the hardware failing.