HP Printer error code 50.4 is a peculiar issue which the user gets more often while trying to use the printer for their purposes. It is often known as fuser error. The issue occurs when the printer’s interior as it might get damaged or there is a technical malfunction with the power supply. So, while commanding for the print the files get piled up in the fuser and thus, the bugs occur. Or, there are incorrect Windows registry files, the poor internet connection, and much more. To resolve the problem completely, you need to look online for help or contact the specialists at #HP_Printer_Assistant number to get proper solution to your problems.