"Troubleshooting a discontinued, wide-format printer, and basing my diagnosis on what I could find in HP online support, it seemed most likely a HDD failure. Given the machine was only about three years old, this was plausible. On the hunch it wasn't anything more, I began to seek out parts. Fortunately I found Tom's Hardware site. Shipment of parts was rapid, and as hoped, got the printer operational again! Thanks for stocking these discontinued parts! "