HP Printer Error 79 [How to Fix]

In this article, we will provide solutions to the two main types of HP printer error 79.

1. How to Fix HP Printer Error 79 Turn Off Then On

When “Error 79 turn off then on” is displayed, it means your printer has an error with the internal firmware.

To fix this error, do the following:

Step 1: Turn off your HP printer. Wait for about 30 seconds before turning on your HP printer. Wait for your printer to initialize.

Step 2: If your printer is plugged into a surge protector, you should unplug it and plug it into an electric wall outlet directly. After that, turn your HP printer on.

Step 3: If the above steps do not resolve the error, then you should remove USB and network cables from your printer before power cycling it. To power cycle your printer, follow the steps we shared here: HP Printer Errors and Solutions – Run a Power Cycle on your HP Printer.

If your printer goes back to the “Ready” state after that, you should check the installed firmware version. If it isn’t up-to-date, then you need to update it. To update the printer firmware, we recommend you follow the instructions in this link: HP Printer Errors and Solutions – How Do I Fix the Printhead Error on My HP Printer and follow the instructions under the “Update your Printer Firmware” subsection.

Step 4: If this error occurs intermittently, then you should delete all the current print jobs and then run a simple print job.

Step 5: If none of the above clears the error, then you should reach out to HP Customer Support for further assistance.

In this article: HP Printer Errors and Solutions [Detailed] we discuss other HP printer errors in detail.

2. How to Fix HP Printer Service Error 79 Turn Off Then On

The “79 service error turn off then on” occurs when the installed DIMM is incompatible with your HP printer.

To fix this error, do the following:

Step 1: Turn off your HP printer. Wait for about 30 seconds before turning on your HP printer. Wait for your printer to initialize.

Step 2: If your printer is plugged into a surge protector, you should unplug it and plug it into an electric wall outlet directly. After that, turn your HP printer on.

Step 3: If the above steps do not resolve the error, then you should remove USB and network cables from your printer before power cycling it. To power cycle your printer, follow the steps we shared here: HP Printer Errors and Solutions – Run a Power Cycle on your HP Printer.

If your printer goes back to the “Ready” state after that, you should check the installed firmware version. If it isn’t up-to-date, then you need to update it. To update the printer firmware, we recommend you follow the instructions in this link: HP Printer Errors and Solutions – How Do I Fix the Printhead Error on My HP Printer and follow the instructions under the “Update your Printer Firmware” subsection.

Step 4: If this error occurs intermittently, then you should delete all the current print jobs and then run a simple print job.

Step 5: If you still find the error after doing the above steps, then you should uninstall the installed DIMMS and then retest. If after removing the DIMMs your printer works perfectly, you should install a supported and compatible DIMM.

Step 6: If none of the above clears the error, then you should reach out to HP Customer Support for further assistance.