hello, i am building a miner with following components:
board: asus p5q deluxe, cpu: intel c2d e6600 RAM: 4x1 gig corsair: power supply: enermax revolution 1020W.
GPU's: 2x 5870 2X5850
OS: windows 7 x64(clean reinstallation already done)
my problem is the computer only recognizes 2 of the cards. and yes, i am using vga dummy plugs
if i change 2 cards he ever recognizes the cards which are on the blue pcie slot and the card on the bottom pcie slot(black)
i am using 1x pcie risers to connect the cards.
does anyone have a clue where the problem can be?