Thank you for showing your interest in HP Support Forums. It is a great place to find the help you need, from other users, HP experts, and other support personnel. I see from your post that you need assistance related to HP Stream 7. Don't worry we'll work together to help you find a solution.
To provide you with an accurate solution, I"ll need a few more details:
What type of account have you created? Is this Microsoft account or local account.
Have you followed any HP Article to get this sorted?