Help On Sound Driver

I am not a computer guru so I really need help.

There is this computer I have access to that has just been formatted. unfourtunately, we could not locate the cd that comes with it (is it mainboard now). I love to watch films, play games that has sounds e.t.c on the computer cos it is a p4.

Pls how can I download a sound device that will be compatible with the system. Is there a software that will do this cos i hear that you need specific drivers for specific boards.

Help pls.

Thanks. I just got it resolved. See what I've been missing. Thanks a lot.

@ Seun
I got a program that gave me the name of the motherboard (program is tune up). It gives you info that are readily available about your system. I then went to the site, to download, looked for that particular motherboard, and downloaded the driver.