|The card may not have come with "drivers" software on the CD that came with it for Vista or Windows 7.|
Software available here - you may need to scroll right to see the download icons - the first icon on the right is for Windows 7 , the second icon on the right is for Vista, from the left side, on the SBT-SP6C line.
Whether it can be used with 64bit OSs, I don't know. If it can't be, you'll get an error message regarding that when you try to install it.
"Audio Chipset: CMEDIA CMI8738"
If they cannot be used with a 64bit OS, then search the web using something such as:
64bit drivers CMI8738
(the I is a capital i)
People frequently install sound software the WRONG way.
Sound and video "drivers" always have associated files that must be installed properly along with the actual drivers. If you install only the actual drivers, it's likely the device will NOT work properly.
Unless the instructions for installing a device tell you otherwise......
(this ALWAYS applies to sound adapter software.....) .
You DO NOT install drivers for a device while booting into Windows, if the software for the device has not been installed yet - when Windows detects a generic device or New Hardware while booting, you allow it to search for drivers, it doesn't find any, and it wants you to show it the location of the drivers - CANCEL that, continue on to the desktop, and install the software for the device using the proper installation from a CD or the proper installation file that you downloaded from the web.
The same applies no matter when Windows finds New Hardware !
(The following also applies if you want to re-install the sound software)
If you DID install drivers that way, go to Control Panel - Classic View - Programs and Features and Un-install the software you installed, reboot, DO NOT install drivers while booting.
If there was nothing to Un-install there, or on any case, look in Device Manager (reboot at least once first if there was something to Un-install there) , and if the sound device is still listed, RIGHT click on it and Un-install it (that may take a while).
If it was still listed in Device manager, reboot at least once after you have un-installed it.
DO NOT install drivers while booting, and then install the sound software the right way !
Where is Device Manager in Vista and Windows 7 ?
Double click on the Computer icon, click on System properties in the top bar, Device Manager is on the left.