hey all......i purchased this built computer from my friend.I am having a problem with th audio,when i go into the device manager i have a yellow question mark beside the audio icon.I go and update the driver,it can't find any for the audio.I was reading a few posts on here,was wondering how to find out what mother board i am using.is there like a program i can download to tell me what mobo i have,cause i hate to take the cover off and start to poke around inside thxs