"Can't find utility disks"??? You've created the situation, and now YOU
must solve it. Open the PC case and look where you have the speakers
plugged in on the back of your PC. Make sure the power cable is unplugged
first. On the card is the manufacturer's brandname. You can go to their
website and download the drivers, they are FREE. With the limited info
you provided, I can only guestimate, but you could contact your PC dealer
and maybe they'll assist you.