My vista businee product key does not work

[Joelfulilwa]

Hello,
my system crashed so I had to reload Vista Business O.S. but when I try to use my product key it says it is already registerd so can't do

 

[Joelfulilwa]

Hello,
my system crashed so I had to reload Vista Business O.S. but when I try to use my product key it says it is already registerd so can't do

 

[ex_bubblehead]

Use the phone registration method.

 

[Dark Lord of Tech]

http://www.sevenforums.com/tutorials/18715-activate-windows-7-phone.html

For vista and 7 ^