error code 0X83C0000A NOS_LOADER_APP

[DucLong]

Please let me know the cause of this failure. Thank

[A_Gayathri]

Hi @DucLong ,

Welcome to The HP Support Community.  

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

I understand you are getting the error code 0X83C0000A NOS_LOADER_APP on your HP Envy 4502 printer indicates a problem with the firmware not loading properly. 

There are a couple of reasons why this might happen:

• Power Issues: A loose connection or power surge can interrupt the firmware loading process.
• Carriage Jam: If the carriage that holds the ink cartridges is jammed, it can prevent the printer from functioning correctly and lead to this error code.
• Firmware Corruption: In rare cases, the firmware itself might be corrupted.

Here are some steps you can try to fix the error:

Power Reset: Turn off the printer, and unplug the power cord from both the outlet and the printer itself. Wait for at least 60 seconds, then plug the cord back into the wall outlet and then the printer. This can clear any temporary glitches caused by power fluctuations.

Check for Carriage Jams: Open the printer and see if the carriage is stuck. If it is, carefully remove any paper scraps or debris that might be causing the obstruction. HP Printers - Carriage jam or E3 error

Disable Antivirus/Firewall: Temporarily disable your antivirus or firewall software in case it's interfering with the printer's communication. Remember to re-enable it after you're done troubleshooting.

Refer to this document: HP ENVY 4502 e-All-in-One Printer

I hope this helps. 

Take care and have a good day.

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