Multimedia audio controller is showing yellow exclamation mark in device manager

[Novelette]

what does it mean when multimedia audio controller is showing a yellow exclamation. My computer has no sound and my search to restore the sound has lead me to this point. What can I do. I am not really computer savvy.

 

[ktownmike]

Go to the website of the maker of the computer, find and install drivers for the sound card.