Hi asllearner
Thank you for posting the screenshot as it shows you are entering the correct information.
There could be a few reasons why it isn't registering:-
1) Make sure you install using Admin account.
2) Your firewall is preventing HN from connecting to the internet and so it cannot validate the details.
3) A virus checker is preventing HN from creating its prefs file.
There have been some reports that certain virus checkers can prevent HN from registering - Mcafee was one.
There are some posts here about registering on Windows platform:-
http://www.tigabyte.com/smf/index.php?board=7.0If you haven't solved it - which version of Windows are you using?
Malkom