Hi Haven’t used Envy 4500 for a while comes up with Error Code 0 x 083C0000A NOS_LOADER_APP.

[Tommo6671]

Have unplugged waited etc etc as per advice but still same error message. Tips welcome. Haven’t used printer for a while but is in excellent condition

[Gaya1239]

Hi @Tommo6671 ,

Welcome to The HP Support Community.  

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

The error code 0x83C0000A NOS_LOADER_APP on your HP Envy 4500 indicates an issue with the printer's firmware or software. Here are some troubleshooting steps you can try:

Basic Checks:

1. Power Cycle: Turn off the printer, unplug it from the power outlet for 30 seconds, then plug it back in and turn it on.
2. Connection: Ensure the printer is securely connected to the power source and your computer (wired or wireless). If using Wi-Fi, check for a strong signal. Avoid using surge protectors or power strips for the printer's power cable.

Software Solutions:

1. Update Firmware: Check the HP website for the latest firmware update for your Envy 4500 model. Download and install the update following the HP instructions.  Update the firmware on an HP printer
2. Reinstall Printer Software: Uninstall the HP printer software from your computer and download the latest version from the HP website. Reinstall the software following the on-screen instructions.
3. Firewall/Antivirus: Temporarily disable your firewall or antivirus software to see if it's interfering with the printer's communication. Remember to re-enable them after troubleshooting.
4. Clear Print Queue: Clear any stuck print jobs in the printer queue on your computer.
5. Update Printer Drivers: Outdated or corrupted printer drivers can sometimes cause errors. Visit the HP website and download the latest drivers for your printer model. Install them on your computer and see if the issue persists. Software and Drivers for HP ENVY 4500 e-All-in-One Printer series
6. Check for Paper Jams: Even if the printer appears to be in good condition, paper jams can occur over time. Open the printer cover and check for any jammed paper or debris that might be blocking the printer mechanism.

Refer to this document: HP ENVY 4500 e-All-in-One Printer series User manual 

I hope this helps. 

Take care and have a good day.

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