Something strange with Vista

[nZone]

My monitor and graphic card are HDCP compliance --I don't know if this has anything to do with it. But here is my scenario;

1. During PC shutdown process; it'll shutdown completely if the monitor is still on. Then turn off the monitor.
2. During PC shutdown process; if I turn off the monitor while the shutdown is still in progress the system doesn't completely power off. The power led turned dim; all fans are off; hard drive are off etc... Note: it's not in sleep mode because it doesn't wake up if I press any key on the keyboard. It'll reboot if I press the power reset button.

Any ideas?

 

[SoundTheSurrender]

It probably has to do with how it handles the HDCP protocol. Maybe its the last thing it deactivates and if the monitor is off it can't deactivate it right.