@miftahul1649,
Welcome to HP Forums, this is a great place to get support, find answers and tips.
Thank you for posting your query, I'll be more than glad to help you.
I understand that you are unable to register to i-pass wireless as the serial number does not match.
Let's go through a few steps to troubleshoot this issue.
And here's the step by step guide for you in the link: http://bit.ly/2pwVPjj
You may also check the link: http://hp.care/2pwZxcI
Let me know how this works.
You have a good day ahead.
Rainbow23 - HP Support.