HP Deskjet D2400 Series Printer Compatibility?

My printer's power button always blinks and everytime i start printing, it always says that the printer is offline and the active printing documents are all paused whereas when i check it in Devices and printers, it can read the printer and when i troubleshoot it, it states that the printer is off. i don't know what's the problem because it only started when i upgrade my o.s to windows 7 but when i bought that printer i was using windows xp.... it turned out that i encounter this kind of problem when i'm using windows 7 but i also encounter this when i used windows xp but not that serious to the extent that it's not printing at all.