I have no experience with this particular board, but I know some boards are very picky about what PCI slot you use for particular devices. My only helpful suggestion is to try installing the devices starting with the slot furthest from the AGP slot, and work your way up. Bascially, try different devices in different slots and see if that helps. I had an EPox board that simply would not allow a modem to be installed UNLESS I used the bottom 2 slots. Strange but true.