Hi @Nayyerm,

Welcome to HP Support Community.

Thank you for posting your query, I will be glad to help you.

If your HP Officejet Pro 8600 printer is displaying the message "Preparing to print" after you've installed new ink cartridges and then rejects them, there could be several reasons for this issue. Here's a step-by-step guide to troubleshoot and fix the problem:

1. Remove and Reinstall Cartridges

1. Turn off your printer and unplug it from the power source.Open the ink cartridge access door and carefully remove all the cartridges.Check the cartridges for any protective tape or packaging that might still be attached.Reinstall the cartridges one by one, making sure they are firmly seated in their respective slots.Close the ink cartridge access door.

2. Reset the Printer

1. Turn on your printer and wait for it to fully initialize.Once the printer is ready, perform a power reset:Unplug the power cord from the back of the printer while it is still turned on.Wait for at least 60 seconds.Plug the power cord back into the printer.Try printing again to see if the issue is resolved.

3. Clean Cartridge Contacts

1. Turn off the printer and unplug it from the power source.Remove the ink cartridges from the printer.Use a lint-free cloth lightly dampened with distilled water to clean the electrical contacts on the cartridges and inside the printer.Allow the contacts to dry completely.Reinstall the cartridges and close the ink cartridge access door.

4. Update Printer Firmware

1. Check if there are any firmware updates available for your HP Officejet Pro 8600 printer.Visit the HP Support website, enter your printer model, and download the latest firmware update Follow the instructions provided to install the firmware update on your printer.

5. Check for Ink Cartridge Issues

1. Ensure that you are using genuine HP ink cartridges that are compatible with your printer model.Check the expiration date on the cartridges to ensure they are not expired.If you have another set of cartridges available, try installing them to see if the issue persists.

I hope this helps.

Take care and have a good day.

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.

Rachel571

HP Support

Hi @ITDawn ,

We are sorry that the issue is not resolved when the above troubleshooting steps were performed.

Unfortunately, there are no further actions we can take through this channel. I recommend reaching out to our phone support for further assistance.

1. Click on this link -  https://support.hp.com/us-en

2. Select the country.

3. Enter the serial number of your device.

4. Select the country from the drop-down.

5. Click on "Show Options".

6. Fill out the web form. A case number and phone number will now populate for you.

Please feel free to contact us here anytime you need any further assistance.

Have a great day!

Rachel571 

HP Support

Hi @Junker1988 ,

Welcome to The HP Support Community.  

Thank you for posting your query, I will be glad to help you.

I understand the trouble you're facing with your HP OfficeJet Pro 7740. Let's try to troubleshoot and resolve the issue. Here are some steps you can follow:

Check for Updates:

• Ensure that your printer firmware is up-to-date. You can check for updates via the printer's control panel or through the HP Smart app.

Restart Devices:

• Restart your printer, computer, and wireless router. Sometimes a simple restart can resolve connectivity issues.

Check Printer Queue:

• Go to Control Panel > Devices and Printers.
• Right-click on your HP OfficeJet Pro 7740 and select See what's printing.
• Cancel all print jobs in the queue. This can sometimes clear a stuck job that is causing issues.

Run HP Print and Scan Doctor: HP Print and Scan Doctor

• Download and run the HP Print and Scan Doctor.
• Follow the prompts to diagnose and fix any issues.

Check Wireless Connection:

• Ensure your printer is connected to the same network as your computer.
• You can check the network settings directly on the printer’s control panel.

Reinstall Printer Drivers:  HP OfficeJet Pro 7740 Wide Format All-in-One Printer series Drivers

• Go to Control Panel > Devices and Printers.
• Right-click on the HP OfficeJet Pro 7740 and select Remove device.
• Download and install the latest drivers from the HP support website.

Set Printer as Default:

• Go to Control Panel > Devices and Printers.
• Right-click on the HP OfficeJet Pro 7740 and select Set as default printer.

Check for Print Spooler Service:

• Press Windows + R, type services.msc, and press Enter.
• Locate Print Spooler in the list of services.
• Right-click Print Spooler and select Restart.

Check for Errors or Paper Jams:  HP OfficeJet Pro 7740 Printers - 'Paper Jam' Error

• Ensure there are no paper jams or other mechanical issues within the printer.
• Check the ink levels and replace cartridges if necessary.

Factory Reset the Printer:

• Go to the printer's control panel.
• Navigate to Settings > Printer Maintenance > Restore > Restore Factory Defaults.
• Note: This will reset all settings on the printer, including network settings.

Refer to this document:  HP OfficeJet Pro 7740 Wide Format All-in-One Printer User manual

I hope this helps. 

Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. 

Hi @Mary4526

Welcome to the HP Support Community

I understand you are getting an error message  on your printer . Not to worry I will help you to get a resolution to resolve the issue.

Let's perform a power drain: 

• With the printer turned on, disconnect the power cord from the rear of the printer and also unplug the power cord from the wall outlet.
• Remove USB cable, if present.
• Wait for 2-3 minutes, press and hold the power button on your printer for about 30 seconds to remove any additional charge.
• Now plug back the power cable straight to a wall outlet without any surge protector or an extension cord (This is important) and then plug back the power cord to the printer.
• Turn on the printer and wait till warm-up period finishes and the printer is idle

Update the printer firmware 

Click here to download and install the latest printer firmware from your product

Click here to know different methods of updating printer firmware.

Hope this helps! Keep me posted for further assistance.

Take care and have a good day.

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.

Rachel571

HP Support

Hi @WadeG ,

Welcome to The HP Support Community.  

Thank you for posting your query, I will be glad to help you.

I understand multiple issues could affect your HP OfficeJet Pro 6978 printer. Here are some troubleshooting steps you can follow to try to resolve the issue:

1. Check Ink Cartridges

Even if the ink cartridges are not the direct cause of the connectivity issue, they can sometimes cause the printer to enter an error state that affects other functions.

• Ensure that the ink cartridges are properly installed.
• Check if the ink levels are sufficient. Replace any empty or near-empty cartridges.
• Look for any error messages on the printer display related to the ink cartridges.

2. Restart Printer and Computer

Sometimes a simple restart can resolve connectivity issues.

• Turn off the printer and unplug it from the power source.
• Turn off your computer.
• Wait for about a minute, then plug the printer back in and turn it on.
• Turn your computer back on and try to connect to the printer again.

3. Check Printer Connection

Ensure that the printer is properly connected to your computer.

• If using a USB connection, ensure the cable is securely connected to both the printer and the computer.
• If using a wireless connection, ensure the printer is connected to the same network as your computer.

4. Run HP Print and Scan Doctor HP Print and Scan Doctor

HP provides a tool called "HP Print and Scan Doctor" that can help diagnose and fix many common printing and scanning problems.

• Download and install HP Print and Scan Doctor.
• Run the tool and follow the on-screen instructions.

5. Reinstall Printer Drivers  Software and Drivers for HP OfficeJet Pro 6978 All-in-One Printer

There might be an issue with the printer drivers on your computer.

• Uninstall the current printer drivers:
  • On Windows, go to "Control Panel" > "Devices and Printers," right-click your printer, and select "Remove device."
  • On macOS, go to "System Preferences" > "Printers & Scanners," select your printer, and click the minus button.
• Download and install the latest drivers from the HP Support website.

6. Check Printer Status

Ensure the printer is set as the default printer and is not paused or offline.

• On Windows, go to "Control Panel" > "Devices and Printers," right-click your printer, and select "Set as default printer."
• On macOS, go to "System Preferences" > "Printers & Scanners," right-click your printer, and select "Set as default printer."

7. Update Printer Firmware  Update the firmware on an HP printer

Ensure your printer firmware is up-to-date.

• Go to the HP Support website, enter your printer model, and download the latest firmware update.

8. Network Configuration

If you are using a network printer, ensure your network settings are correct.

• Verify the IP address of the printer and ensure it is on the same network as your computer.
• You can print a network configuration page from the printer's control panel to check the IP address and network status.

Refer to this document:  HP OfficeJet Pro 6978 All-in-One Printer User manual

I hope this helps. 

Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. 

Hi @WadeG ,

Welcome to The HP Support Community.  

Thank you for posting your query, I will be glad to help you.

I understand multiple issues could affect your HP OfficeJet Pro 6978 printer. Here are some troubleshooting steps you can follow to try to resolve the issue:

1. Check Ink Cartridges

Even if the ink cartridges are not the direct cause of the connectivity issue, they can sometimes cause the printer to enter an error state that affects other functions.

• Ensure that the ink cartridges are properly installed.
• Check if the ink levels are sufficient. Replace any empty or near-empty cartridges.
• Look for any error messages on the printer display related to the ink cartridges.

2. Restart Printer and Computer

Sometimes a simple restart can resolve connectivity issues.

• Turn off the printer and unplug it from the power source.
• Turn off your computer.
• Wait for about a minute, then plug the printer back in and turn it on.
• Turn your computer back on and try to connect to the printer again.

3. Check Printer Connection

Ensure that the printer is properly connected to your computer.

• If using a USB connection, ensure the cable is securely connected to both the printer and the computer.
• If using a wireless connection, ensure the printer is connected to the same network as your computer.

4. Run HP Print and Scan Doctor HP Print and Scan Doctor

HP provides a tool called "HP Print and Scan Doctor" that can help diagnose and fix many common printing and scanning problems.

• Download and install HP Print and Scan Doctor.
• Run the tool and follow the on-screen instructions.

5. Reinstall Printer Drivers  Software and Drivers for HP OfficeJet Pro 6978 All-in-One Printer

There might be an issue with the printer drivers on your computer.

• Uninstall the current printer drivers:
  • On Windows, go to "Control Panel" > "Devices and Printers," right-click your printer, and select "Remove device."
  • On macOS, go to "System Preferences" > "Printers & Scanners," select your printer, and click the minus button.
• Download and install the latest drivers from the HP Support website.

6. Check Printer Status

Ensure the printer is set as the default printer and is not paused or offline.

• On Windows, go to "Control Panel" > "Devices and Printers," right-click your printer, and select "Set as default printer."
• On macOS, go to "System Preferences" > "Printers & Scanners," right-click your printer, and select "Set as default printer."

7. Update Printer Firmware  Update the firmware on an HP printer

Ensure your printer firmware is up-to-date.

• Go to the HP Support website, enter your printer model, and download the latest firmware update.

8. Network Configuration

If you are using a network printer, ensure your network settings are correct.

• Verify the IP address of the printer and ensure it is on the same network as your computer.
• You can print a network configuration page from the printer's control panel to check the IP address and network status.

Refer to this document:  HP OfficeJet Pro 6978 All-in-One Printer User manual

I hope this helps. 

Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. 

Where can I purchase a genuine HP printer head? I am down without one.

Hi @DM156498,

Welcome to The HP Support Community.  

Thank you for posting your query, I will be glad to help you.

I understand you've already taken several troubleshooting steps for your HP ENVY 4512 printer, but the issue persists. Since the problem occurs even when printing diagnostic pages directly from the printer, it's likely an issue with the hardware or the ink cartridges themselves.

Here are some additional steps you can try to resolve the problem:

Check for Firmware Updates: Update the firmware on an HP printer

• Make sure your printer has the latest firmware installed. Sometimes firmware updates can resolve printing issues.

Examine the Ink Cartridges:

• Even if you've reinstalled the cartridges, they could still be the source of the problem. Inspect the cartridges for any visible damage or leaks. Ensure the vent is not blocked.
• If possible, try using a new set of ink cartridges to see if the problem persists.

Clean the Printhead:

• Since running the cartridge cleaner tool didn’t help, manually clean the printhead. Here's how:
  1. Turn on the printer.
  2. Open the cartridge access door.
  3. Wait for the carriage to move to the center.
  4. Remove the cartridges.
  5. Use a lint-free cloth lightly moistened with distilled water to gently wipe the printhead. Avoid touching the copper contacts.
  6. Allow the printhead to dry completely before reinstalling the cartridges.

Printhead Alignment:

• Although you mentioned running the alignment tool, sometimes doing it manually can help.
  1. Load plain white paper into the input tray.
  2. On the printer's control panel, go to "Setup" > "Tools" > "Align Printer" and follow the on-screen instructions.

Check the Printer Settings:

• Ensure that the paper type and print quality settings in the print driver match the paper loaded in the printer.

Perform a Hard Reset:

• Sometimes a hard reset can help reset the internal memory of the printer.
  1. Turn off the printer and unplug the power cord.
  2. Wait for at least 60 seconds.
  3. Plug the power cord back in and turn on the printer.

Refer to this document:  HP ENVY 4512 All-in-One Printer User manual 

HP ENVY 4510, 4520 printers - No black ink, wrong colors, other print quality issues

I hope this helps. 

Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. 

Printer will print 1 page then I get this error. I turn off and then back on. It will do the same thing. I did the procedure of troubleshooting and that did not work. So what else can I try?

My printer when hooked up begins auytomatically printing pages with one line of gibberish on each page until the paper runs out or in this case the cartridge - I have unplugged for long periods of time - what else can I do?

Hi @jerpf,

Welcome to the HP Support Community

I understand you are facing an issue with your HP Product. Not to worry I will help you to get a resolution to resolve the issue.

To assist better:

• May I have the exact model name of the product? Refer to this document for steps to find the product details. Do not share your personal information such as serial, phone number, email ID, etc.

I hope this helps! Keep me posted. 

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution.

Hi @Slynn9092,

Welcome to HP Support Community.

Thank you for posting your query, I will be glad to help you.

It's possible that using non-genuine HP cartridges could be causing the issue with your HP Officejet 7520 printer. Non-genuine cartridges may not be recognized properly by the printer, leading to errors such as "printhead missing." Here are some steps you can take to troubleshoot the issue:

Reinstall Genuine HP Cartridges: If you still have the genuine HP cartridges that were originally installed in the printer, try reinstalling them to see if the error persists. This will help determine if the issue is related to the non-genuine cartridges.

Clean Printhead Contacts: If you suspect that the printhead contacts may be dirty or obstructed, you can try cleaning them. Turn off the printer and unplug it from the power source. Open the printer's access door and locate the printhead. Gently clean the electrical contacts on the printhead with a lint-free cloth lightly dampened with distilled water. Allow the printhead to dry completely before reinstalling it.

Perform a Hard Reset: Sometimes, performing a hard reset can help resolve various printer errors. To perform a hard reset, turn off the printer and disconnect the power cord. Wait for at least 60 seconds, then reconnect the power cord and turn on the printer.

I hope this helps.

Take care and have a good day.

Please mark this post as “Accepted Solution” if the issue is resolved and if you feel this reply was helpful click “Yes”.

Rachel571

HP Support

Thank you for your response. This is the error that I am getting. It prints one or two pages but not the whole document. When I print page by page it works. Any suggestions from what you see below?

Hp officejet 4635 gets error code oxb8111cae and has flashing power light. Have tried unplugging and replugging. Unable to have cartridges move to remove and reinsert. Obviously can’t connect to internet or print anything. 

Constantly unable to print from my phone 

This time error code CADE6C printer spool

This printer has been a pain in my ass 

Thanks Rachel.  I've called support twice, and the problem is still not resolved.

How can I be connected with engineering?  First level support is not helping.

Hi @jeffersonm1,

Welcome to The HP Support Community.  

Thank you for posting your query, I will be glad to help you.

I understand the ink carriage in your HP OfficeJet Pro 6978 printer is stuck and won't move, there are a few steps you can try to troubleshoot the issue:

• Power Cycle: Turn off the printer, unplug it from the power source, and wait for a few minutes. Then, plug it back in and turn it on again. Sometimes, a simple power cycle can reset the printer and resolve the issue.
• Check for Paper Jams: Even if you've already checked for paper jams, it's worth doing it again. Open the printer cover and check for any bits of paper or debris that might be obstructing the ink carriage's movement. Use a flashlight to get a good look inside the printer.
• Manually Move the Carriage: If the carriage is stuck, try gently moving it manually. Be very careful not to force it, as you could damage the printer further. If it won't budge, don't push it too hard.
• Inspect for Obstructions: Sometimes, small objects or debris can get lodged in the printer mechanism, preventing the carriage from moving. Carefully inspect the printer's interior for any foreign objects and remove them if found.
• PFG Gear Inspection: The PFG (Priming and Capping) gear is a crucial component of the printer mechanism. If you suspect it's the issue, you might need to disassemble the printer partially to access it. However, this should be done with caution and preferably by someone with experience in printer repair.

Refer to this document:  HP OfficeJet Pro 6978 All-in-One Printer User manual 

HP Printers - Carriage jam or E3 error
 

I hope this helps. 

Take care and have a good day.

Please click“Accepted Solution” if you feel my post solved your issue, it will help others find the solution. 

I have an HP OfficeJet Pro 8020e and am getting an event code: 80.62.24 saying there is a problem with the printhead.  Have never seen this before.  What does it mean?

Hi @RayHasty ,

Welcome to The HP Support Community.  

Thank you for posting your query, I will be glad to help you.

I understand you are facing an issue with your HP Product. Not to worry I will help you to get a resolution to resolve the issue.

It seems like your printer is experiencing a communication issue or receiving unexpected print commands. The text you provided appears to be HTTP headers, specifically related to the Internet Printing Protocol (IPP), which is commonly used for network printing.

Here's what each line generally means:

1. Content-Length: 184: This header indicates the length of the content body that follows. The number "184" may vary depending on the actual content being sent.
2. Content-Type: application/ipp: This specifies the type of content being sent, in this case, it's IPP (Internet Printing Protocol) data.
3. Host: localhost: This header specifies the hostname or IP address of the target server. "localhost" typically refers to the local machine itself.

It seems like there might be a script or program sending these IPP requests to your printer. You may want to check your network for any devices or software that might be sending these print commands unintentionally. Additionally, ensure that your printer's network settings are configured correctly and that it's not being accessed by unauthorized devices.
 

Refer to this document: HP LaserJet Pro MFP M225dw User manual 
Troubleshoot a Wi-Fi connection to an HP printer
 

I hope this helps. 

Take care and have a good day.

Please click“Accepted Solution” if you feel my post solved your issue, it will help others find the solution. 

I have only recently tried to print photos on the HP ENVY Photo 7155 printer and the output is always very smudge-y on photo paper. I tried using the back of glossy photo paper and it was still smudge-y. I’m using high quality HP cartridges (64XL).

Any suggestions?

Thanks.