I have same issue with Error 79. I tried various re-set of printer, but none has helped. When I send print job (either connected by Ethernet or USB), printer just give Error 79 and restarts. Notthing else happen. Phone support person stated that no support is provided for this printer anymore since it is discontinued... Very frustrating as I still have a whole set of unused cartriges...
Did anyone else solve this problem, or basically I am stuck with expensive cartridges and dead printer???