I am generally using sblive cards but I took that one out and trying to get ac 97 to work. if i turn speakers( Altec lansing acs33W) loud enough I can hear an annoying whistle like a fan motor is working . obvioslyI tried disabling all the fans in the case except one i can't turn the cpu fan off because I am running a 1.4 tbird. It will burn in 5 seconds. But also when I get any error messages on my screen I get the usual bong! sound but also a hellish hiss for a second.