Laserjet Pro 400 m425dn password lost

[MikeSamuels]

Hi

How can I factory reset this printer - somebody set a password and we cannot access anything through the panel...

Thanks!

Mike

P.S. This thread has been moved from LaserJets to Multifunction and All-in-One - HP Forums Moderator

[MikeSamuels]

BTW Tried firmware update, worked but password still set

[teddyland]

You may try the NVRAM which may help to remove/reset all your setting to default.

[teddyland]

Add steps for NVRAM:
- turn off printer
- press and hold the lower right quadrant of the touchscreen when you turn on the printer
- when the permanent storage init. message appear, release the buttons
- when printer finished NVRAM, it will come to ready status

[MikeSamuels]

Thanks - tried but doesn't work...  I hold the panel where the red X appears sometimes, power on but the machine just goes through its usual startup and initialise.

[Cosmo Kramer]

it is a little tricky.  take your whole thumb and cover the bottom left had corner.  be sure and leave it there for several seconds.  I just tried the reset and had to use my whole thumb.

(Although I am employed by HP, I am speaking for myself and not for HP)

[MikeSamuels]

Thank you again - I do appreciate your time on this.  I won't get a chance to try this out for a few days now, but I'll post back the results.  Just so I understand - there's a 'hidden' button in the bottom right corner of the display panel, seperate from the part where the red 'X' cancel button lights up sometimes?

Regards

Mike

[therealshaggybo]

This method also works with the M375nw

Thanks!

[W4gn3r]

http://www.enxmag.com/2013_months/Nov2013/NVRAM%20Reset%20procedures%20for%20HP%20PRO%20series.htm

This images show the location you have to press.

[Viper007]

Very easy and well accurate steps to succesfully reset admin account.

thank you for sharing.