Sounds like you have some component incompatabilites. Your mother board is likely the problem. I have seen/had experiences with boards and periferals such as video and sound cards. Best thing to do would be to see if you can use the cards in other motherboards, and if they work, take the one you got back and get a new (different) one. Via seems to have one of the better chipsets for socket 7, so try and get one with a via chipset, not sis or ali.