I'm trying to install the decklink sp pcie card on my Mac Pro in the PCIe slot 4. But when I boot or start the Mac Pro, nothing happen, I only heard the fans and that's it. I turned it off a couple times holding the power button. I disconnected all cables except the power cable, and the Mac Pro start or boot. When the Mac OS Tiger is up, I open the System Profiler, and check the PCI cards, it's there(decklink). I installed the software 6.1(drivers and stuff), but never restart the Mac Pro. The same problem again and again. I took off the card and boot Mac Pro correctly like usual. I need help. I got the latest Mac Pro 8 core.