Auto search for audio driver in my pc

To find out what audio devices are present to the following:
Click on Start
Click on Settings
Click on Control Panel
Double click on System
Click on the Hardware tab
Click on the Device Manager button
Click the + beside Sound, Video and Game Controllers
You should see the audio devices installed
You can right click on one and click on update driver OR once you have seen the device go to the support site of your computer maker and download the correct driver.