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My wife recently put new print cartridges in our HP7640, and ever since I have not been able to print wirelessly from any device.  The printer is connected to the same WiFi Network with a strong signal.  I have tried disconnecting and reconnecting to the network.  I have researched previous postings and followed the suggestion to remove the print cartridges, remove power and USB, wait 60 seconds, reconnect power and then reinstall the print cartridges.  It will not print wirelessly from any device, either through the WiFi network or WiFi direct with password.  It will, however, print through a USB connection to a desktop.  What happened and how do I fix it?

2 REPLIES 2
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By the way, I also ran the Wireless Set Up Wizard from the printer control panel to try to restore settings, but that didn't help.

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Well, now it's fixed.  I don't know what locked it up, but this morning I downloaded the HP Smart App for Android and installed it on my tablet.  It was able to print wirelessly from the tablet and now I can print from any device.  So I found an answer on this website, but not as an answer to my question.  Advice to others -  When you post a question here, don't hold your breath waiting for an answer, and don't stop cruising around other similar questions because you might just trip over the answer to your problem. 

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