Question:
A customer asked: "My HP 7720 is stuck on the HP logo screen and won’t work. My computer doesn’t recognize it either. What’s the problem, and how can I fix it?"
Answer:
The issue where your HP 7720 gets stuck on the HP logo screen usually indicates a firmware problem, corrupted startup data, or a hardware failure preventing the printer from booting correctly. Here’s a step-by-step approach you can try to resolve the issue:
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Perform a Hard Reset:
- While the printer is still turned on, unplug the power cord directly from the back of the printer.
- Wait for about 2-3 minutes to allow the printer’s internal memory to fully discharge.
- Plug the power cord back in and turn the printer back on.
This reset clears temporary memory glitches and power-related issues that might be causing the problem.
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Firmware Corruption:
If the printer remains stuck and isn’t recognized by your computer, there’s a good chance the firmware has been corrupted. Typically, re-flashing or reinstalling the firmware can resolve this, but this process requires specialized tools or HP service utilities. Unfortunately, without the printer being detected by your computer, the re-flash cannot be performed through standard software tools. -
Mainboard Repair or Replacement:
If firmware corruption is confirmed and the printer remains unresponsive, the mainboard could be the root cause. You can find replacement HP 7720 mainboards available on platforms like eBay. If you have the technical skills and the tools to reprogram EEPROM chips, you can physically copy fresh firmware onto the new or existing mainboard to restore functionality. This is a complex procedure and typically requires advanced knowledge of printer hardware.
Addressing printer issues like this can be complicated due to the technical and hands-on nature of the work. While we are unable to provide remote troubleshooting or repairs, we do offer in-person evaluation and repair services through our local diagnostic facility. You can learn more here: BCH Technologies Printer Repair Service (https://bchtechnologies.com/printer-repair-service). Due to high demand, we operate on a first-come, first-served basis, and it may take a few weeks to get your printer evaluated after drop-off.
For DIY solutions, I highly recommend starting with our YouTube channel: BCH Technologies YouTube Channel (https://youtube.com/@bchtechnologies). Use the search function next to the “About” section to look for videos on similar issues. We’ve uploaded hundreds of videos over the past nine years, and this tool can help you find the content you need much faster. Additionally, YouTube might suggest relevant videos from other creators that could assist you with firmware and repair solutions.