Hi,
Thank you for sharing your question. I understand how frustrating it is to be unable to sign in, especially when a small setup mistake like entering the wrong birthdate suddenly causes the system to treat you as a child and block your screen time. This happens because Windows Family Safety automatically applies child restrictions when an account is created with a minor’s age, and the device will enforce screen‑time limits before allowing access.
To resolve this, you can sign in using the device’s local administrator account if one exists, or use the “Forgot my PIN” option to reset your sign‑in and regain control. Once you get back in, you can remove the device from Microsoft Family Safety, update the account age in your Microsoft profile, or completely reset Windows using the built‑in Reset this PC option to create a fresh setup with a correct adult Microsoft account. If you prefer to start over, Windows allows you to reinstall the system from the recovery environment and create a new primary user without any child restrictions.
Before we continue, could you tell me if you used a Microsoft account or created a PIN during setup, and whether you see any option on the lock screen like “Forgot my PIN” or “Sign‑in options”? I’m here to help you step by step, so please feel free to follow up with what you see on your screen, and we can get your computer working again.”
I hope this helps.
Best Regards,
Noel