Hi Romel!
I have exactly the same problem.
Win7 64bit / Gigabyte GA-X58A-UD5 motherboard / Gigabyte GV-R577SL-1GD Radeon 5570 graphics card.
I found out that the intesity Pro works fine with some other graphics card but not with the none that I have.
And it seems that it is not faulty, though. As it works fine on another Win7 (64) system.
When I intstalled the card plus drivers it worked fine. And still does but just after the installation.
After a reboot (no shut down (!) just reboot) it is still recognized and works fine.
But if I shut down the PC for 30 seconds or so it is not recognized anymore. Changing slot helps. But just until the next shut down.
This is what helped (at least 2 weeks long).
Install the card plus drivers. It should work fine.
Then reboot (do not shut down the PC!) and enter the BIOS.
Don´t change anything just save and exit.
Now the card should work fine.
It solved my problem for 2 weeks. Now this “trick” does not work anymore.
It seems as if the card is not registerd properly. At least on some motherboard graphocs card combinations.
I really hope BMD fixed this bug!!!!!!!!
By the way a friend of mine had the same bug on a Mac!
Take care.