I contacted MS, they said key is not blocked and I have to contact HP as it is OEM key. Regarding the script for HP, I found in some forum that if you can copy token and pkeyconfig from same activated version for different PC then they can replace need for activation. Here is the link.....//community.spiceworks.com/how_to/show/72159-install-oem-windows-7-license-with-any-disk though for windows 7 but I think with some modification can also apply here ( put http before the link)