I was trying to install Vista x64 Ultimate onto a Dell XPS 1730. The first part of the installation went fine until it rebooted to complete the installation. Every time vista got to loading crcdisk.sys it would crash and give me a blue screen of death. The blue screen would pop up and disappear so fast that I didn't have a chance to see the error (I wish they placed a wait until a keyboard hit occurred).
I eventually sorted out the issue by using Vista x64 with SP1 cd to reinstall the OS, problem solved.