Still the dell from hell

I have a Dell DEMONsion 4300 that took a static hit thru the modem. Once I got it back on line everything works except the pci slots; the usb will recognize; the agp works but I cant get a rise out of the PCI slots at all …???
I took a look in the Device MGR and the only thing out of the ordinary is that I dont see a PCI Standard host CPU bridge or PCI to ISA Bridge; there are no conflicts or non working devices

Any takers???