Troubleshooting HP Envy 7640 Printing Issues with Smart Cartridge Solutions

Question:

I own an HP Envy 7640 printer, and when I use HP cartridges, they prevent my printer from printing. How can I resolve this issue?

Answer:
So, I would start with the refill procedure for your HP cartridges to solve your issue. Even though the video displays the same process using an HP 67 cartridge, a similar method could be followed on all HP 6x series cartridges, including HP 61, 62, 63, and 64: HP Cartridge Refill Procedure (https://youtu.be/DvtNz_Y6D-g).
There are several ways to approach maintaining a successful project. If you're receiving some error codes with your refilled HP cartridges–specifically E1 and E0–this video is for you: E1 and E0 Error Fix for HP 67 Cartridges (https://youtu.be/ipueD4xutk4).

If you've done a few refills but want to take your project to the next level, check out this video: Taking HP Refills to the Next Level (https://youtu.be/k_bxmO4UzFY).

Printer issues can be complicated because of how hands-on printer issues are. We regret that we are unable to troubleshoot or repair remotely. Nonetheless, we still provide hands-on (in-person) diagnostic and repair services at our local diagnostic facility at https://bchtechnologies.com/printer-repair-service. Due to high demand, their services are limited on a first-come, first-served basis and may take a few weeks. We fix the whole printer and a part of it, and if we can offer you how to go, Our rates are not the lowest. Still, we do request that those seeking help via our website help themselves first via the internet, including our YouTube channel (https://youtube.com/@bchtechnologies) — if you're looking for specific topics, use the search tool next to About to find them, it's a time-saver.