Hi, I'm new here I have a pair of X1800XT Crossfire cards, and am waiting on my new Asus board to get here, I thought while I waited I would install 1 of them in my AsRock 939 Dual board and have some fun.. When I installed the cards windows detects them and all goes good, then I installed the Cats (tried several) and reboot when I get to the splash screen the monitor loses signal and gives me an "invalid sync" error... I tried both the Master and Slave cards and get the same error... specs AsRock 939 Dual 1.90 BIOS X2 3800 X1800Xt Crossfire edition 1g OCZ 3200 Audigy Antec 550 true power 19" Hitachi 751 Multiscan any help would be appreciated
