I have just setup a raid array and installed x64 on my system using these instructions and the newest nForce drivers. I like others I have seen posted had a problem with windows hanging after loading acpitabl.dat. After spending nearly 10 hours and making more attemps than I even want to try to remember I have found the solution. I am an id***. While attempting to copy nvatax64.inf from the legacy folder I grabbed a file with the same name but a different extension. Perhaps post 1 can be edited with a warning for future Idiots that there a files that look like nvatax64.inf to keep them from making the same mistake.