Umm...try Everest. It scans your comp and tells you what devices you have, so you can Google them and find the drivers.
You can get Everest
Here
When you install it follow these steps (It's a bit long so bear with me):
Step 1:
Instead of ticking lots of boxes, I'm going to make it really easy. Click on the Report Button.
Click Next, then click Custom selection, then Next.
You'll need to tick the following:
Under Computer:
Summary
DMI
Overclock
Sensor
Under Motherboard:
CPU
Motherboard
Memory
SPD
Chipset
Under Display:Windows Display
PCI / AGP Video
GPU
Desktop
Click to tick the Multimedia box
Under Storage:
Windows Storage
Logical Storage
Physical Storage (this one may not show on some computers)
Click Next, select HTML, click Next.
It will take between 5 and 20 secs to complete. Once it's finished you'll be shown the report, which will be really really long. Check under "Multimedia" for the sound stuff. Hope this helped.