However, a printer is only as good as its software. Without the correct driver, your computer will not be able to communicate with the machine. Searching for the "hp laserjet mfp m139m142 driver download link" often leads users to confusing third-party websites full of fake "download" buttons and potential malware.
Do not plug the printer into your PC until the installer asks you to. Run the .exe: Double-click the downloaded file.
: Ensure paper is not wrinkled, folded, or damaged .
sudo apt-get install hplip hplip-setup
: Insert a stack of plain paper into the input tray with the top forward and the side to be printed facing up . Push the stack in until it stops.