win7 better than Vista or win8 (a leak!)

good album that has overshadowed dirt Vista..et remains the only alternative PC for PC oriented MAO
The OEM version (PC assembly) delivered in an envelope 1 cent, with the serial number stick on the PC case.
has finally validated the internet, or via voice server once the OS installed (15-day delays).
The constraint is the fact of not being able to change the disk where the OS is installed in case of crash ... it must be said!
To you call the online service that normally gives you a new serial number to validate win7
Thank you windows I remove a star for that because this is sometimes disadvantageous when one also upgrade his PC
Otherwise it is beautiful and easily be optimized for MAO flee the station ... win8 which is oriented tablet!