Our Lexmark X654de MFP was failing to boot up and would give a blue screen with a 900.30 Firmware Error. I talked to Lexmark support and they walked me through some troubleshooting and finally said that the system board would need to be replaced, but the printer was no longer under warranty. We ended up getting a replacement system board (J0P04P) off of eBay. I replaced it today, but I am now getting a 950.09 NVRAM Mismatch error during boot.
After doing some Googling on the error, it looks like I need to either factory reset the printer or clear the NVRAM. The only instructions that I can find on Factory Reset involves going through the printers menu, which I can't because it won't boot completely. I haven't been able to Clear the NVRAM either because I haven't been able to find the right key combo to boot into a menu to do it.
The...