Hello there. You should give us your information about your's audio card. You can do that bu following:
Download and install Everest from here
. Start it and go to Multimedia -> PCI/PnP Audio. In the right side you'll see Driver Description,and bellow that something like this.
Realtek ALC888/1200 @ Intel 82801GB ICH7 - High Definition Audio Controller [A-1] PCI
This is mine.Copy and paste your here,so we can find drivers.
Also I'll suggest you to update your system spec