Hi, I have a iMac 27" i7 8GB Ram. I installed Windows 7 64 bit. Everything seems to work just fine, except Blu Ray playback. I have a LG BDRW drive in a 5.25" external caddy. When I try to play a Blu Ray using the bundled CyberLink PowerDVD HD software it says I dont have a HDCP display so it asks me to run a 'BD advisor' tool for more info. That tells me that both the ATI 4850 card AND the display are not HDCP compliant. I know they must be so whats going on!? Any ideas?