Hi @Ada711,
Welcome to The HP Support Community.
Thank you for posting your query, I will be glad to help you.
Let's try to troubleshoot your HP Envy Photo 7155 All-In-One Printer.
Here are a few steps you can follow to try to resolve the issue:
1. Perform a Hard Reset
- Turn off the printer and disconnect the power cord from the back of the printer.
- Unplug the power cord from the wall outlet.
- Wait for at least 60 seconds.
- Plug the power cord back into the wall outlet.
- Reconnect the power cord to the printer.
- Turn on the printer.
2. Update the Printer Firmware Update the firmware on an HP printer
Sometimes, a firmware update can resolve startup issues. To update the firmware:
- Turn on the printer and ensure it is connected to your computer via USB or your network.
- Download the latest firmware update for your printer from the HP Support website.
- Install the firmware update following the on-screen instructions.
3. Perform a Semi-Full Reset
A semi-full reset can restore the printer to its factory settings. To perform a semi-full reset:
- Turn off the printer and disconnect the power cord.
- Reconnect the power cord while holding down the 'Cancel' and 'Color Copy' buttons simultaneously.
- Release the buttons when the printer powers on and displays the HP logo.
4. Check for Hardware Issues
- Open the printer and check for any obstructions or paper jams.
- Ensure that all cartridges are properly installed and that the printhead is correctly seated.
5. Use HP Print and Scan Doctor HP Print and Scan Doctor
- Download and install HP Print and Scan Doctor.
- Run the tool and follow the on-screen instructions to diagnose and fix any issues.
Refer to this document: HP ENVY Photo 7155 All-in-One Printer User manual
I hope this helps.
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Take care and have a good day.
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