One of my older rigs runs an AGP vid card as the primary and two PCI cards as secondaries. XP Pro o/s. Crude but effective. Monday when I started up, none of the three monitors would come out of sleep mode. Replacing cards did nothing. The crazy thing is it will work on the AGP card if the PCI cards are removed and, after fiddling with the BIOS(a techie friend did it), will work on the two PCI cards if the AGP is removed. Using the PCI cards on another machine with another AGP primary, the same problem was observed, ie monitors would not come out of sleep mode. Going a little crazy here and would appreciate any assistance. Thanks.