Hp 7155 won't scan from computer. Dnlded Easy start but they want a passphrase but don't tell what

[CByings]

HP 7155 won't scan.  Dnlded easy start but can't finish it, they want a passphrase but do no tell you what they want.  Next page I put for personal use on hp products, there is a blank but they don't tell you what they want.  Seem to be numbers but that won't work.

[Garp_senchau]

@CByings, Welcome to HP Support Community,

Thank you for posting your query; I’m here to help by guiding you through steps to resolve this issue

Check your Wi-Fi Password: If the passphrase they're asking for is related to Wi-Fi, ensure that you're entering the correct Wi-Fi password for your home or office network.

HP Printer’s Default Passphrase:

If you're setting up a Wi-Fi Direct connection, 

You may refer to this guide: HP printer setup (Wi-Fi Direct) | HP® Support

Run HP Smart:

• Download and run the HP Smart. Follow the prompts to diagnose and fix common printing issues.
• Refer: Use Diagnose & Fix in HP Smart to repair common printing issues (Windows, macOS) | HP® Support

I hope this helps.

Please feel free to reply here if you have any questions or if you need further clarification on any of the steps. 

Take care and have a good day. 

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Regards,