You can use two methods for installing the software using two approaches: One is by using the installation CD provided with the printer or else you can download the driver file from the HP webpage.
Follow the guidelines below to download the software using the installation CD:
Or else you can download the software directly from the webpage and all you need is to find the driver that is compatible with the PC's operating system. Install the HP easy scan to carry on Further processes.
If your printer doesn't find the wireless router, then try updating the printer software and check if any hardware links with all the peripherals such as printer and USB system. Other issues include paper jam, errors in printer display and minimal levels of ink in cartridges.
For queries related to the 123.hp.com/envy 7155, call the HP printer support team to relieve you from the troubles you ought to face.