Question HP M1212nf laser printer stuck in initializing loop

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Aug 2, 2017
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My dad has an HP M1212NF MFP laser printer that has been connected to his desktop via usb cable and working fine. I go to hook it up to the network via ethernet cable so can print to it from other computers. Using a Windows 11 laptop, it found the printer but said driver unavailable. So I go to HP's website and download the full feature software and driver package for it. It goes through the installation process fine, no type of errors came up. Couldn't get it to print so I turned printer off and back on. Now it is stuck in a initializing loop. I have done some searching on this, found many threads on HP support forum and tried the things mentioned there. Resetting NVRAM, unplugging and waiting 60 seconds or more, unhooking all cables. There was a toner low message before this happened so I tried installing a new OEM toner and still didn't help. One place I read said the formatter board may need to be replaced. Besides replacing the formatter board, is there a way to confirm it is bad? I took the cover off and took a good look at it but couldn't see anything wrong, no blown capacitors.

During the driver installation process, it went through a firmware update. Could that have done something to the printer? I know I have seen many people say don't do a firmware update if its working, not talking about with this particular model, just in general with printers. If the firmware update caused the issue, what can I do to get it working again?