No audio devices detected

Hello,

I am trying to fix the sound on my computer (Gigabyte Technology is the brand). I tried everything I found on the other threads, but nothing seems to work for me. I tried the following: reinstalling my driver, restarting the windows audio service, plugging different sound devices in, plugging the sound device in different audio ports, cleaning the sound card. Nothing seemed to work. I have a pc with Windows XP service pack 2. I can't install new service packs, as my computer shows me a warning that my windows version might be unoriginal.

Thanks in advance,

Mathijsvand