How to perform a NVM reset C4750

I rec'd a C4750 of non-functioning of a customer. The touchscreen is s/o; a progress bar & logo who do not complete the boot process. Is there a way to reset hard this device?

Unplug the printer for 1 minute
Hold button / stop plug printer in
Continue to press on button / stop up the little green light lights, then release
This is what worked for me - double-tap on the top left corner of the touch screen, then press once on the lower left corner of the touch screen, then press again twice on the upper left corner. A blue screen should appear.
Touch the back button next to the text MFG white
He'll be a mode grid with progress and then bar the HP logo again
Click on the button of power again and it must give on-screen photo/scan/copy

Tags: HP Printers

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