My system specs are as follows: 2x2900 xt 512 sapphire, q6600@3ghz, 2xpny pc28500 @ 333mghz 3-3-3-9, intel badaxe2 motherboard, raptor hard drive, windows vista ultimate, creative elite pro. For some reason out of the blue the crossfire option is no longer there. I reinstalled the drivers and I was kind of wondering if it was even enabled. The crossfire bridges are perfectly attached and every other option is there in the drivers.