I recently built a new rig and have been having problems with this sound card. Windows 7 does not detect it and it is not showing up in the device manager. There is not a list in the BIOS of the installed addon cards. I have tried it in the PCIe x4 as well as the x16, but nothing. I know the card is getting power; there is a "X-FI" logo on the side that is lighting up when installed on both slots. I have tried disabling onboard sound as well. Any suggestions?