Reinstalling norton anti-virus into new computers.

Dear admin,

 

Referring to my existing Norton anti-virus,

 

previously it was installed in 3 old computers operating with windows vista and windows XP.

 

We had changed our computers to windows 8 PC.

 

I had uninstalled all the Norton anti-virus in the old computers.

 

When i tried to install Norton anti-virus onto the new computers running with windows 8,

 

I managed transfer to 1 computer only.

 

I failed to activate the other 2 computers. It only allow me to run trial version.

 

Kindly advise us in the shortest time.

 

Thank you.