If your HP printer is not connected to the internet then, you can manually connect the printer to your network.
Go to the Wireless Setup Wizard, using the HP printer’s control panel as shown in the image given below.
Wireless Setup Wizard will automatically connect your printer to your wireless router.
If prompted, enter your network’s username and password.
Use the HP Print and Scan Doctor diagnostic tool:
Download and install the latest version of HP Print and Scan Doctor from here.
After installing, run the quick scan to locate your 123.hp.com/envy120 printer.
If the tool displays your HP printer then, select your printer and then click Next.
If the tool doesn’t display your HP printer then, try restarting your printer by turning it OFF and then ON.
Finally, click Retry to connect with your printer.
Uninstall the HP printer driver and software
If the above steps don’t work then, try uninstalling the HP print driver and software from your computer.
Disconnect any USB cable which is connected to the computer from the HP printer
Go to Uninstall or change a program on your computer, and then search for HP printer in it.
Click your HP printer’s name from the list of programs, and then click Uninstall or Yes.
Complete the uninstalling process by following the software guided instructions.
Restart the computer after uninstalling the HP driver and software.
Reinstall the HP printer driver and software
After completing the above steps, install the latest version of the HP driver and software either by downloading it from 123.hp.com, or from the HP driver installation CD-ROM.
The latest version of the full featured HP driver software comes with updates and fixes, which ensure the smooth functioning of your HP printer.
After installing the latest version of the HP driver and software, try restarting your computer and the HP printer. This will ensure the driver loads properly onto your system.
After completing all the above steps open a document, and try taking a print with your 123 HP printer.