Hey There, I am Anna Carter.If you notice that my printer is offline hp frequently, then you need to give a good look at it. You need to troubleshoot to find out what is causing the problem on regular basis. There is a high possibility that the power line has not been connected properly. The other possible cause can be that the USB cable between the printer and the PC is not connected tightly. Connecting the USB cable rightly, the problem may be resolved.