If your HP Printer Offline, don’t worry. There are ways to fix it. For the same, you need to check the power connection. To be specific, check whether the printer is receiving power. You can check this by seeing the printer screen. If the printer screen doesn’t have any icons or is blank, it means that it is switched off. There is also a possibility that may be in sleep mode. In such a case, remove the power cord. Wait for 60 seconds. Then insert the printer's power cable into the socket. The printer will warm up and start working.