Are your trying to install the Vista system and the product key cannot pass?
If so, please let me know how did you obtain this product. If you got it from the original equipment manufacturer(OEM), you need to contact with the
manufacturer to check this issue.
Also, you may check if you have the genuine product:
http://www.microsoft.com/en-us/howtotell/whattolookfor.aspx
And you can refer to the information in the following KB article for the replacement:
How to replace Microsoft software or hardware, order service
packs, and replace product manuals
How to Replace Lost, Broken, or Missing Microsoft Software
or Hardware
Sabrina
TechNet Community Support
