default username password for doctor wizard

[IAmMadHatter]

My printer shows ready yet wont print. Printer Information Report says problem with account. I fixed that and account is good now still wont accept print jobs at the printer. go to use the print doctor from the HP site and asking for username password with admin already populated for username. i have a hp 4255e

[zoey7886]

@IAmMadHatter, Welcome to the HP Support Community!  

Thanks for reaching out about your query regarding your HP Deskjet 4255e! 

We're thrilled to have the opportunity to assist you and provide a solution.  

Here are the steps to troubleshoot your HP DeskJet 4255e printing issue:

Restart the Printer and Computer

• Turn off the printer and unplug it from the power source.
• Restart your computer.
• After a minute, plug the printer back in and turn it on.

Clear the Print Queue

• Press Windows + R, type services.msc, and hit Enter.
• Find Print Spooler, right-click, and select Stop.
• Go to C:\Windows\System32\spool\PRINTERS and delete any files.
• Go back to Services, right-click on Print Spooler, and select Start.

Run the HP Print Doctor

• Download and install HP Print and Scan Doctor from the HP website if you haven’t already.
• When it asks for the username and password:
  • Username: admin (already populated)
  • Password: Try leaving it blank first. If that doesn’t work, try your computer’s administrator password or the PIN you use to log into Windows.

Remove and Reinstall the Printer

• Open Settings → Devices → Printers & Scanners.
• Select your printer, click Remove device.
• Download the latest drivers from the HP Support site for the 4255e model.
• Reinstall the printer and follow the on-screen setup instructions.

Check Printer Status and Connection

• Make sure the printer is connected to the same Wi-Fi network as your computer.
• Go to Control Panel → Devices and Printers.
• Right-click on the printer → Set as Default Printer.
• Right-click again → See what's printing → Printer (top left) → Uncheck Use Printer Offline (if checked).

Let me know how it goes! 

Take care, and have an amazing day!  

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Regards,