HP Laser Jet M234sdwe error code 79

[EB2010]

My HP Laser Jet M234sdwe is has the exclamation point lit up in orange and is displaying 79 on the screen.  Nothing happens when I press any of the buttons.  It is offline and not connecting to my laptop or phone via the HP Smart app.  It appears completely frozen.  I’ve tried turning it off and on and disconecting and reconnecting the power and resetting the router.  It just returns to this same frozen state with the 79 displayed and exclamation point lit up in orange.  How can I fix this?

 

[silverfish]

Are you currently on wireless connection. If yes, please try using a Lan connection and do let me know if it resolves your issue. 

[love22step]

My Starlink router is wireless.  There no lan ports.  

[Repairatrooper]

This is a known issue and the steps to resolve are as follows:

[Oldladyflustere]

The suggested  fixes don't fix the problem. just bought the printer last year.

[Oldladyflustere]

When I hold the + and - it  only goes back to error 79.

[Repairatrooper]

Which exact model do you have @Oldladyflustere , there are different instructions depending on whether your device has an automatic document feeder or not. I would also suggest that you temporarily disable your wireless network to prevent the same issue from instantly freezing the device.

[RJRH]

I have the exact same model as the poster. So do I need to connect my printer to my wifi router with an ethernet cable? (I cannot connect it to the router directly as there is only the one slot for that cord, which connects to the wifi router). Because doing steps 2-7 without doing that resulted in my printer continuing to have an excellent connected wireless status (as shown by the "printer information report" and the blue wifi light being steady), but my computer and instant ink both say my printer is offline. I'll buy the cord if I need to and try that out, but it seems bizarre that apparently I have to take away a basic function of my printer to make it work.

[silverfish]

Please try these steps :-

1. Turn off the printer
2. Remove the toner cartridge from the printer
3. Wait for 30 seconds to 1 minute.
4. Turn on the printer again. Printer will show Er07 indicating missing cartridge. Now insert the toner cartridge. 
5. Error should go away and the printer is ready for printing.

[RJRH]

Silverfish & Repairatrooper,

I followed the instructions from Repairatrooper and turned off IPV6 through the printer IP address (but didn't start with the LAN connecting through an ethernet cable). But that didn't get the printer to print. Then, I went and got an ethernet cable and plugged in the printer through the wife router, too, using the LAN suggestion. It still wouldn't print. I tried the HP Smart diagnose and repair app. It went through its thing and found no errors.

According to the info on the printer accessed through my computer, it is online both through wifi and the ethernet cable (although now the wifi is off). I was able to print out the information sheet by pressing the i button; it says it is connected through ethernet and that wireless connections are unavailable when the printer is connected using Ethernet. That's fine, so long as I can print, which I can't.

I then saw that Repairatrooper had answered my own post on this issue and said to turn off IPV6 through my computer control panel. I looked on my computer control panel for the printer under ports and tried selecting a different port (I had to check something to uncheck IPV6), what worked was selecting LPT1. Now it prints.

I guess I now need to set that up on every other computer that uses this printer. Silverfish, your initial instruction worked to clear the error but not to make the printer print.

What I am not clear on, is if turning off/changing the ports would have worked without the Ethernet cable if I had just selected LPT1 in the first place.