I have 3 HP printers, 2 x HP1100 and a HP1200. All of them were having trouble printing via ip. I got one working by changing the driver, but I still have a 1100 and 1200 not printing. I tried changing the drivers, but that didn't let them print. I see the jobs go into the queue and then they leave, but they never print out. I can ping the printer and it is powered on.