Reset printer to factory defaults

[Greywolf87]

Need to access the printer settings of my device but have lost the admin password.

I'd like to reset my HP Neverstop Laser MFP 1202w to factory default settings to be able to get in to it.

Tried googling around but there is no information on this topic outside a few support tools that were able to reset.

[Valsimot]

Press and hold the resume button ( green one) and turn the printer ON, keep the resume button pressed all the time for 20 seconds, that should reset the printer to factory settings.

[TinaEWB]

Where is the “resume” button on the printer? 

[gideon6]

HP Officejet 4500 Desktop Model G510a

[gideon6]

Product: HP Officejet 4500 Desktop Model G510a

Problem: How do I reset the printer to factory default?