Hp laser jet pro 400 m401 printer 59.A0 error

It seems you have done all the troubleshooting yourself. You can't do a full factory reset, because you can't see the screen. You either have an internal power supply unit failure or a control board failure. Neither are really home repairs. A new one is $147, or you can take it to an HP Service Centre. I am sure not to answer you wanted but it has failed.

Here is a Troubleshooting Manual. HP always do things in style! Low-voltage power supply on Page 34.

HP LaserJet Pro 400 M401 Printer Series Troubleshooting ...

Laser Pros International https://www.laserpros.com > img > hp-manuals
If the hardware or software configuration has not changed or the problem is not associated with any specific software, see the complete service manual for this ...
166 pages

Here is the Service Manual. It looks like the power supply PCB is behind the button. The main PCB is on the right side above the cassette.

HP LaserJet Pro 400 M401 Printer Series Repair Manual

Printer Parts Exchange https://www.printerparts-exchange.com > upload
English repair manual (this manual). CF270-90977. HP LaserJet Pro 400 M401 Printer Series Troubleshooting. Manual. English troubleshooting manual.
118 pages

https://www.google.com/search?q=HP+LaserJet+Pro+400+M401n+reset

https://www.google.com/search?q=HP+LaserJet+Pro+400+M401n+printer.

..

https://printcopy.info/?l=en&mod=erc&brand=HP&model=LaserJet%20M401dw%20Pro%20400&code=41.3000
Google m401dw Error codes

• 59.X Error
• Description:The product has experienced a problem with one of the motors.
• Remedy:Turn the product power off, wait at least 30 seconds, and then turn the product power on and wait for it to initialize. If you are using a surge protector, remove it. Plug the product directly into the wall socket. Turn the product power on.

hp laser jet pro 402 printer 50.2 or 59.3 error has first check your power WATS then fussier & heat element

SOURCE:HP color laser jet printer is displaying error
Developing disengaging motor error. Run the component test to verify that
the print developing disengaging
motor is working correctly.
. Reconnect the connectors J468 and
J1020 between the developing
disengaging motor and the DC
controller PCB.
. if motor is not rotating Replace the developing disengaging
motor.

or
problem due to cairtage leaver lock cairtages not engage properly i hv found max problem of this leaver it found damaged due to improper opening the doorpls follow above steps if problem not resolved then call hp engr for 4th step.
I Hope It Works.

did you read the HP page, on your M401 page.
and read the trouble shooting guide there,
all error codes are there, to read 24./7.
or ask here and they will point to the page. for you.
https://h30434.www3.hp.com/

This is usually a motor code, turn off, unplug wait 2 to 3 minutes plug in and try, may work good luck

59 error indicates a main motor failure. This if often caused by a jammed cartridge, so trying a new toner cartridge would be your first step to trouble shoot this.