I attempted to install while having my computer automatically detect Plug & Play devices to no avail. I then tried installing manually and the printer shows as having been installed. Each time I attempt to print, I get an error message with a three prong plug showing on my taskbar. I must mention I tripped over my cord and yanked it out of the printer, before this became a problem. It was printing fine before. I've considered trying a new cord but thought that may not be the problem since I'm getting power. Please help!