Hello Dianne Overton,
Thank you for posting in the Microsoft Q&A forum.
Your question is about connecting your PC to a Claude.ai Pro membership. Claude.ai is a non-Microsoft service, so it's outside what this forum can help with. I'm not able to assist with third-party subscriptions, accounts or their setup.
For help with your Pro membership, please contact Claude.ai's support team directly through their official website. They can best guide you on how to access your membership on your HP all-in-one.
If you later have a question about Windows itself, such as updating or setting up your PC, please feel free to post a new question here.
Thank you for your understanding.