I was just looking for a little more info on the reliability of the operation with Windows 7. I'll check my Win7 x64 Ultimate disk now.
When you repair the Operating system, it changes the hardware config file, (this file contains the information about the mobo etc) most of the time, if ur hardware does not match the info in this file, it wont boot.
For instance, if i put a SDD in my pc, format it, install windows on it, then put it into a laptop, the laptop will not boot into windows.
I'm not sure what this will do with updates, as it may overwrite files which have been updated.
The best bet is always install a fresh copy of windows when you change mobo. As it assures no problems/conflicts/Fk Ups