Printer prompts "Please check if the printer is online and the cable connection is normal"?

When printing something, click Print, the printer does not respond, prompt "Please check the printer is online and cable connection is normal" how to do?

A: As a hint, first check whether the power cord of the printer is plugged in, whether there is bad contact or the interface damage and so on. If the printer can start normally after pressing the print power switch, go to the BIOS settings to look at the port settings. Generic printers use ECP mode, and some printers do not support ECP mode, which can be Ecp+epp, or "Normal" mode. If the problem has not been resolved, then focus on checking the printing cable, first the computer off, the printing cable at both ends of the pull down to plug in, pay attention to not live plug. If the problem is not resolved, try a different print cable, or use a substitution method.