Officejet pro L7780 printer freezes after new wireless router wpa2 code is entered.

I recently changed routers and attempted to add the new WPA2 code. Using the wireless setup wizard on the printer it allowed me to get to the very end where the printer says network installed press OK to continue. Unfortunately pressing OK did nothing and all keys/buttons on the control panel do not respond. Tried removing the software, resetting the control panel by holding 6 & # during power off/on no help. Running windows 7 bit.

It could be that the printer does not support WPA2. Try WPA.
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Hello gathey,
You can click the links below for two documents dealing with wireless network issues for your printer.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01154219&tmp_task=solveCategory&cc=us&dlc=en&la...
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01893360&tmp_task=solveCategory&cc=us&dlc=en&la...
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Although I work for HP, my posts and replies are my own opinion and not those of HP.

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Hi,
Try following these steps and check if that may help:
http://support.hp.com/us-en/document/c03806987/
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Welcome to the discussion area!
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Hi TechUserOKC,
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Let us know if this helps.
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I am employed by HP

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Hi there Jamesis,
Welcome to the Forums
I saw your post about the issue you are having with your installation and would like to help where I can.
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R a i n b o w 7000I work on behalf of HP
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Hi,
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kudo points for rewards

Download and run this utility: http://h20180.www2.hp.com/apps/Nav?h_pagetype=s-926&h_lang=en&h_client=s-h-e17-1&h_keyword=dg-NDU&ju...
What does it say?
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I am employed by HP

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If my post resolved your problem, please mark it as an Accepted Solution ...
I worked for HP but now I'm retired!

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I am running Windows 8.1
The printer status OFFLINE.
It has done this in the past and I have been able to correct it by deleting and reinstalling it (at least back when I was running Windows XP and 7. Possibly at that time it was the DHCP issue pointed out in a previous post.
Now however, I can remove it and when I add it back, using Control Panel, Devices and Printers, Add a Printer, it is recognized correctly on the network (shows the IP address I know is in the printer) but when I try to send a test page, I get a pop-up saying it is OFFLINE. When I status it, it confirms it is offline.
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I can’t give you more than the info in my question about the model of the printer-HP Officejet Pro L7780 All-in-One printer
I had been using this printer for several years and this has happened a few times in that it required me to delete it and reinstall—that just does not work now. This last time was after I had upgraded to Windows 8.1 however I did that several weeks ago and it has worked okay since then…this is the first time it has stopped working on 8.1 however
Running Windows 8.1
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Can't configure Wireless Connection to HP OfficeJet Pro L7780

I recently purchased both my iMac 24" 2.8GHz computer with OS x 10.5.2 and HP OfficeJet Pro L7780. I was able to use the HP setup CDs for my Windows laptops and configured them to use the printer in a wireless configuration.
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I can ping the printer and I can connect to the printer's EWS, but the HP software will not find the software.
Overall config: iMac wireless network connection to switch; Printer also wireless connection to switch.
So far HP is dumbfounded and all they can say is that I should call Apple because the printer software works fine when I connect the Ethernet or USB cables.
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Thanks,
Roland

Thank you for the thought. Yes, although my SSID is public, I have a WEP 128-bit security key. The printer, the iMac and my Windows laptops all connect to the wireless network without issue, as evidenced by my Windows laptops and iMac (if I use the driver included with OS X 10.5.2).
I can ping the printer from the iMac as well as connect to the printer's web interface, so connectivity exists. It is as if the setup software or the printer are trying to communicate using a port that or service that OS X may be blocking.
My OS X firewall is configured to accept all connections though... so that shouldn't be the issue unless there is a bug in accepting all connections.
Thanks,
Roland

After installing latest OS update I can no longer print from my iPad to my HP Officejet Pro 8600 printer. Any suggestions?

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Installing the new os may have tricked one of the three devices involved. If it used to work, it will again.
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Officejet pro L7780 printer freezes after new wireless router wpa2 code is entered.

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