HP Color LaserJet Pro M452dn "menu access disabled"

[todlarson]

We have an HP Color LaserJet Pro M452 that we cannot administer.   

We have it connected to the network and can access its web page via https.  However, it does not accept any of our passwords.  The password prompt says "password only, no username".    The Home page of the printer says "Ready Secure".

We attempted a factory reset via the touch panel but the LCD says "Menu Access Disabled".

How do we do a factory reset of this HP Color LaserJet Pro M452dn?

Thank you,

[Reskape · Accepted solution]

Hello there

A restore to defaults will not remove the password on unit 

You will need to do a NVRAM (It will delete all settings on the unit like the network IP)

Turn the printer off.
2. 2-line control panels: Press and hold the right-arrow button and the Cancel button
simultaneously. Keep the buttons depressed as you turn the printer on.
Touchscreen control panels: Turn the printer on, and then, as soon as the HP logo appears, press the
lower right quadrant of the control panel.
3. When the Permanent Storage Init. message appears on the display, release the buttons (2-line control
panels) or touchscreen.
The NVRAM initialization starts.
4. When the printer has finished the NVRAM initialization, it returns to the Ready state.

Or even this other reset in case that it continues with the same issue 

1. Turn the printer off.
2. 2-line control panels: Press and hold the left-arrow button and the Cancel button simultaneously.
Keep the buttons depressed as you turn the printer on.
Touchscreen control panels: Turn the printer on, and then, as soon as the HP logo appears, press the
lower left quadrant of the control panel.
3. When the Permanent Storage Init. message appears on the display, release the buttons (2-line control
panels) or touchscreen..
The super NVRAM initialization starts.
4. When the super NVRAM initialization has been completed, the printer enters the generic printer mode.