I’m working on HP envy 4520 multi-functional printer for printing the important documents correctly. This multi-functional printer is an advanced Inkjet printer, which has many unique and advanced features, so I have decided to work on this printing machine. When I start to work on my HP envy 4520 multi functional printer, I am experiencing problems to start work on my printing machine. I don’t have the full knowledge to recognize the main reasons of this error, but I don’t get the success. I have applied HP envy 4520 troubleshooting resolutions to sort out this issue. So anyone can recommend the solid ways to solve this technical problem.