my printer will not fully boot up

[Apierce35]

my printer will not go past hp loading screen

[Max3Aj]

@Apierce35, Welcome to HP Support Community. 

Thank you for posting your query, I will be glad to help you. 
If your HP ENVY Photo 7855 is stuck on the HP loading screen and won’t fully boot up, it’s likely a firmware issue, power-related glitch, or a corrupted setting. Here’s a step-by-step guide to troubleshoot and (hopefully) fix the issue:

Perform a Hard Reset

This clears temporary glitches without affecting saved data.

1. Disconnect the power cable from the back of the printer (while it’s still on).
2. Unplug the power cord from the wall outlet.
3. Wait 60 seconds.
4. Plug the power cord back into the wall, then into the printer.
5. Press the Power button if it doesn’t turn on automatically.

➡️ See if it gets past the loading screen.

Remove USB or SD Card Devices

Sometimes attached devices can prevent booting.

1. Remove any USB drives, SD cards, or external storage connected to the printer.
2. Try booting again.

Power Reset + Button Combo (Semi-Reset)

This is a deeper reset and may help if the printer firmware is glitching.

1. Unplug the power again.
2. Press and hold the Power + # + 6 keys together.
3. While holding them, plug in the power cable.
4. Continue holding for about 10-15 seconds, then release.

You may see a “Semi-Full Reset” screen if successful.⚠️ This may reset some settings and clear network configuration.

Try a Firmware Recovery (Optional – for tech-savvy users)

If your printer is recognized over USB, you might be able to push firmware from your PC.

1. Go to HP’s official firmware page for the 7855: HP ENVY Photo 7855 Drivers & Downloads.
2. Download the latest Firmware Utility for Windows.
3. Run the utility with the printer connected via USB.
4. If the printer is detected, follow prompts to re-flash firmware.

Note: If it’s not detected, this method won’t work.

Service Mode / Recovery Mode (Last Resort)

HP printers don’t all have user-accessible recovery modes, but if you’re up for trying:

1. Power off the printer.
2. Hold Back arrow + Home or Cancel + Power (depends on model).
3. Plug in the power while holding the buttons.

I hope this helps. 

Take care and have a good day. 

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Max3Aj

HP Support