I recently Custom reinstalled Windows 7 64 bit and the OS fails to detect the soundcard. The previous installation did recognize the card. It's on old card (a Creative SB X-Fi Fatal1ty PCI). When hovering over the sound icon on the taskbar it reports that "no audio output device is installed". Oddly enough, Aida64 Extreme reports the card as being there. The Bios settings are no different than previously. Device Manager shows a 'Multimedia Audio Controller' but it will not install drivers. I reinstalled the chipset drivers after the OS reinstall so that can't be the problem. I've reseated the soundcard in the three PCI slots and presume that is not the problem as the red light on the card is on as usual. Cheers.