Hello, I am Christina Pine. I am Printers offline executive and freelancer. To fix an HP printer that is offline on Windows 8, try the following steps: Check the printer's power and connectivity, Restart the printer and the computer, check if there is a newer version of the printer driver available, and install it if necessary. Sometimes, an outdated print job can cause the printer to go offline. To clear the print queue, go to the Devices and Printers control panel and cancel any pending print jobs.