Please Help!!!!

I fried a mother board somehow I hooked up a HD4890 to a 32bit pentium board and when I couldn't load the drivers I shut down and swaped back to the HD4650 and then I started getting four tones high pitch, low pitch, high pitch, low pitch then shutdown. the board is from a gatway 506gr. I've got a new board and all the fixins minus processor that comes next week. I didn't want to throw the old board away so if these tones tell you somthing please share.

I have a 900w PS and I was wearing a bonding strap working barefoot on a tile floor I don't think it was static electricity or power issues. It was confusing with the 4890 physicaly installed it reset the screen resolution to ultra low, and both screens matched. I removed to card because the drivers wouldn't install. I'll try reseating the memory and I'm gonna swap components to see if I can isolate a component other than the motherboard or pcu. thanx for the advice man.