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Honor Student
JimBrex
Posts: 2
Member Since: ‎02-27-2009
Message 1 of 7 (3,725 Views)

HP Officejet Pro L7780 All-in-one is locked up...won't shut off. Help!

My L7780 was connected to my server.  It would print fine, but wouldn't copy.  We made it a stand alone again, but to power it down, you have to unplug it.  It won't shut off with the power button.  When it comes back up, it looks fine....no messages.  But it won't do a thing.  It won't copy, can't use help...just sits there. We are more interested in it being a copier than a printer, but as of now, it is useless. 
Regents Professor
DexterM
Posts: 4,502
Member Since: ‎11-17-2008
Message 2 of 7 (3,716 Views)

Re: HP Officejet Pro L7780 All-in-one is locked up...won't shut off. Help!

Is the printer connected to a wireless network? I ask cos there was an issue with the printer freezing up when connected wirelessly to some routers. So try to turn of your routers and then turn on your printer.

also, download the latest firmware of the printer and update the printer with it.
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Honor Student
JimBrex
Posts: 2
Member Since: ‎02-27-2009
Message 3 of 7 (3,694 Views)

Re: HP Officejet Pro L7780 All-in-one is locked up...won't shut off. Help!

Thanks Dexter.  I think you are right on.  I'll try those things.  I unplugged the printer a few times, and it didn't help.  Then I left it and the power pack unplugged overnight and it now copies again.  Obviously, I still can't print, then use it as a copier.  I'll try your suggestions.  Thanks.

JB

Regents Professor
DexterM
Posts: 4,502
Member Since: ‎11-17-2008
Message 4 of 7 (3,680 Views)

Re: HP Officejet Pro L7780 All-in-one is locked up...won't shut off. Help!

Follow THIS document and see what happens.
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Make it easier for other people to find solutions, by marking my answer with \'Accept as Solution\' if it solves your problem.
Click on the BLUE KUDOS button on the left to say "Thanks"
I am an ex-HP Employee.
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ron_sweatman
Posts: 1
Member Since: ‎03-31-2013
Message 5 of 7 (1,230 Views)

Re: HP Officejet Pro L7780 All-in-one is locked up...won't shut off. Help!

I too had that problem starting when I installed windows 7. My solution was to download all current updates to the printer. Next was to shut the printer off, with the off button, then unplug the power source to shut it down. Next was to install the current updates I had previously downloaded. Turn the computer back on and the problems dissapeared.

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simon-jester
Posts: 1
Member Since: ‎08-01-2013
Message 6 of 7 (944 Views)

Re: HP Officejet Pro L7780 All-in-one is locked up...won't shut off. Help!

I am happy to report a solution to my very same problem using your advice. I will download updated firmware for my printer.
Great job, much thanks.
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Whatiswronghere
Posts: 1
Member Since: ‎03-10-2014
Message 7 of 7 (535 Views)

Re: HP Officejet Pro L7780 All-in-one is locked up...won't shut off. Help!

I can send print jobs from my mac to the printer and it will print, however I cannot turn off the all in one using the power button on the front panel. I cannot any longer print a copy by touching the copy button on the front panel. I can only turn the all in one off by pulling the plug. I have unplugged everything and plugged it back up and still no results.

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