It may be devastating to see that your HP printer is offline when you’re working on something which has to be done at the earliest. The work and time cannot wait for anyone. Hence, you need to understand the reasons why your HP printer has gone offline. For the same, you need to troubleshoot for certain problems and then try to fix them. Initially, you can see whether the printer screen is blank. It means that the printer must be off or in sleeping mode. In such a case, restart it and your printer will start working.