Officejet Pro 8100 K light blinking after cartridge replacement

[mihasam]

Hello, we have replaced our black ink cartridge (950XL) on our Officejet Pro 8100 printer. Ever since this replacement, the K icon keeps blinking. We have also tried another new ink cartridge but we get the same error.

If i use the print doctor from HP it says ink supply failure, but i think this must be some bs locking of ink cartridges. We use original cartridges.

I have tried a hard reset and cleaning the contacts on cartridge and print head as suggested on other threads but no avail. I saw something about a regional reset that supposeldy fixed somebodys same problem but I don't know how you do that.

Please help and thank you!

[zoey7886]

@mihasam, Welcome to the HP Support Community!  

Thanks for reaching out about your query regarding Ink Supply Failure for HP Officejet Pro 8100! 

We're thrilled to have the opportunity to assist you and provide a solution.  

If the K light (black ink icon) continues to blink after replacing your black ink cartridge, it indicates an ink supply failure. Based on the information provided and knowing you are using genuine HP cartridges, here are the steps you can follow to troubleshoot this issue:

Steps to Resolve the Issue:

Ensure Genuine HP Cartridges: Verify that you are using authentic HP cartridges. HP often highlights the importance of using genuine supplies, as non-HP or refilled cartridges can cause printing issues and might not be resolved by following standard troubleshooting steps. Check the authenticity of your cartridges on the HP anti-counterfeit webpage.

Check and Clean Ink Cartridge Contacts: Sometimes, the contacts on the cartridge or inside the printer carriage can be dirty or obstructed. Follow these steps:

• Turn off the printer and unplug it.
• Open the ink cartridge access door.
• Remove the ink cartridge.
• Inspect the contacts on the cartridge and within the printer.
• Use a lint-free cloth or a cotton swab slightly moistened with distilled water to clean the metal contacts.

Replace the Cartridge: Try using another genuine HP cartridge if the first replacement did not resolve the issue. Sometimes cartridges can be defective even if they are genuine.

Hard Reset: Conduct a hard reset of your printer:

• Turn off the printer.
• Disconnect the power cord from the printer and the wall outlet.
• Wait about 60 seconds.
• Plug the power cord back into the printer and the wall outlet.
• Turn on the printer.

Use HP Print and Scan Doctor: Download and run the HP Print and Scan Doctor, which is an automated tool that can help diagnose and resolve printing issues.

Hope this helps!  

Take care, and have an amazing day!  

Did we resolve the issue? If yes, Please consider marking this post as "Accepted Solution" and click "Yes" to give us a helpful vote - your feedback keeps us going!  

Regards, 

[mihasam]

Zoey, thank you for responding but if you read my thread you gave me all the solutions that I have tried as i have already seen them on another thread, so no your reply is unfortunately not helpfull 😞

[zoey7886]

@mihasam, Thanks for the follow-up, and I’m really sorry the issue is still unresolved despite your efforts — I can imagine how frustrating that must be.

Since you've already tried the essentials (hard reset, cleaning contacts, swapping with another genuine cartridge), let's dig a bit deeper:

Was the printer originally purchased and used in a different country or region from where the new cartridge was bought? HP cartridges are sometimes region-locked.

Do you see any error code or message on the printer software or control panel (aside from the blinking "K" light)?

Has the printer had any firmware updates recently? Some updates can affect cartridge compatibility.

Let’s figure this out together — appreciate your patience!

Warm regards,

[mihasam]

Everything is bought in Slovenia. The printer and all the cartridges (all original). There is no other error or meassge (really annoying btw)

[Kuroi_Kenshi]

Hi @mihasam,

Thank you for the response.

Since @Zoey7886 is not available at  the moment, I'll be assisting you further.

I've sent out the reset codes to you via private chat, please go through it.

I'm glad I could help! 😊 If this resolved your issue, please mark it as "Accepted Solution" and click "Yes" on "Was this reply helpful?" Your feedback not only keeps us going but also helps others find the solution faster! 👍✨

Take care and have an amazing day ahead! 🚀

Best regards,