This HP OfficeJet Pro 8100 came out of a local university when they upgraded the lab. It powers on fine, but there is an error on the ink display screen. The letters M,C,Y and K keep flashing and there is like a spraying nozzle icon above the M that you can see in the picture. I tried swapping the magenta ink cartridge but nothing changed. Since I'm not sure what the error is or how to fix it, I'm listing this as not working, but I'm hopeful that someone smarter than me can fix it easily. This printer also does not come with a power cord. Please message me with any questions. Thanks for looking!