error 45 brand new printer offline hp2900

[samgotmarried]

hp2900 can print test page when hard wired from laptop to printer cannot printer wirelessly. wi fi blue light flashing. cannot print from mobile.

[Pallipurath]

Hi @samgotmarried 

Welcome to the HP Support Community.

Thank you for posting your query.

I understand how it can be when your printer shows a "Printer Offline Error Code 45" along with alternating blue light flashing. A Code 45 error means your computer has completely lost connection to the printer. I would request you to please follow the steps:

Power Reset the Printer

This helps clear any temporary hardware or communication glitches:

• Turn ON the printer.
• Remove the ink cartridges carefully.
• Unplug the power cord from the back of the printer and the wall outlet.
• If connected via USB, disconnect the USB cable as well.
• Wait for 2–3 minutes.
• Press and hold the Power button on the printer for 30 seconds to discharge any residual power.
• Plug the power cord directly into a wall outlet (avoid surge protectors).
• Reconnect the power to the printer and turn it on.
• Reinsert the cartridges once prompted.

Update Printer Firmware

Outdated firmware can cause communication issues:

• Visit the https://support.hp.com/in-en/drivers 
• Select your printer model and follow the instructions to download and install the latest firmware.

Check Printer Connection

• If using Wi-Fi, ensure the printer is connected to the correct network with 2.4GHz
• If using USB, try a different port or cable.
• On your PC, go to Settings > Devices > Printers & Scanners, select your printer, and ensure it's set as default and not paused or offline.

I hope the information shared has been useful and resolves your concern.

Take care and have an amazing day!