I can't find the printer or print from the mac computer. I found my printer has disappeared. I read all kinds of answers online and decided to uninstall the software on the printer. When I attempted to install more current software from hp, it did not work. I tried this three times. Then I decided to install software that came with the printer. (I also found that the software from the previous install did not complete or work.) That did not work. The printer seems to have vanished in thin air. Please help. Thank you.