I installed iAtkos 5i and managed to get everything work, including my HD 4870 video card.

My question is, why am I able to play a demo I downloaded from apples website, but I cant play cod4 that I downloaded from a website. Once it mounted the .dmg it verified the disk...

But when I go to play it, the screen turns black and then about 5 - 10 seconds later, Im guessing the computer freezes cause my keyboard doesnt do anything when I press caps lock, it has a light on it when i press it to let me know its enabled. Also, my monitors power button starts flashing instead of staying on..?

Thanks in advance.

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ASUS Maximus Formula
Q9550 @ 3.6ghz
4GB OCZ Reaper 1066mhz +
2GB Dominator 1066mhz
Sapphire HD4870
5 WD Sata hard drives
2 IDE DVD, Sony/LG
Antec P180
Antec Tru Power 650
Zalman 9700 led