As per the other thread, have you checked that power is connected? Just because the light is blinking it does not confirm this. Try uninstalling all openni and drivers, then installing the Microsoft Kinect SDK. If that also fails, then your hardware is probably at fault.
Have you tried the 32 bit drivers? I'm running Win 7 64bit with the 32 bit drivers, and haven't had any problems.
I expect since MS intended this for just the XBox, they did not
design/QA their USB interface for general ports.
Some investigation would probably reveal what USB chips do and don't
work with the Kinect.
Good luck!