You have a printer with a firmware corruption
Try downloading the firmware from the hp.com website for your printer product number cc431a. There is a new firmware which was just released today. try downloading the firmware and sending the firmware while the printer is off,
If this does not work the formatter board is damaged and it will need to be replaced.
you can also try doing a hard or reset or nvram:
1. Turn the printer off
2. Hold down the right arrow and the cancel button
3. Reboot the printer while holding the buttons and hold until permanent storage is displayed. Let go of the buttons and wait for the ready message on the display.
Al
[email protected]
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