After Windows has checked all of the connected hardware, it should detect your sound card and either search the Windows files for the correct driver or ask for you to insert the correct driver disc.
There are three typical sources for sound card drivers:
• Windows disc
• Motherboard disc
• Sound card driver disc
Additionally, Windows Update should be able to find the correct drivers for you device.
More often than not, if the sound driver has not been installed and using the Scan for hardware changes has detected your device but failed to install the software then it is likely that Windows doesn’t have a compatible sound card driver.
At this stage, you will need to check the disc for your motherboard (particularly for users with bespoke PCs or home builds) or check the sound card driver disc.
Note that a compatible driver must be one designed for use with both your sound card and your operating system – also note that compatibility with Windows Vista does not necessarily equate to compatibility with Windows 7. In this situation you should check the website of the sound card manufacturer to determine whether or not there are additional drivers available to suit your operating system.