Hello,
I know in Windows XP, the hardware authentication was done with a number of hardware items. If three or more changed, the computer would (normally- unless you got lucky) blue screen and not start. In Windows Vista, the computer will not blue screen, but rather require "re-activation". I'm curious as to what hardware is monitored to trigger this re-activation. I have been able to find a plethora of charts, sites, etc for Windows XP but have been unable to find them for Windows Vista. Does anyone know either the list of hardware or where I could find a chart?