The Man -
The issue could be HDCP (HIgh Definition Copyright Protection) compliance. Both graphics card and monitor must be HDCP compliant to display Blu-ray. Check your monitor specs to be sure that the monitor is HDCP compliant. You cannot assume this - the specs should affirmatively state 'HDCP Compliant'.
There is a workaround if either the GPU or monitor fails to meet HDCP compliance - a program called AnyDVD HD by Slysoft:
http://www.slysoft.com/en/ If the issue really is HDCP compliance, then it's not fair to blame Corel for the problem. It's totally fair to blame the U.S. Congress and President Bill Clinton for passing the provisions in the Digital Millennium Copy Act that allow such software locks - annoying that valuable hardware you purchased no longer displays media that it was originally designed to display.
If the onboard GPU isn't HDCP compliant, you might try installing a video card and disabling the onboard GPU in the BIOS. NVIDIA's driver package will tell you if your monitor is HDCP compliant.
nepenthe