I am up and running with my computer, and have 4 usb ports in the back, 2 are being used for the mouse and keyboard, but no matter what port I plug my pinter into, the two remaining in the back, or the two in the front, I always get the error message of "Usb Device not recoginzed". This printer was working fine with my old computer, and I unfortunately do not have the installation disk for it. I am able to plug the mouse and keyboard into different USB ports and they work fine on all of them. I have attempted installing new drivers, and the install disk off of hp.com, and still no success. I have attempted to run the HP utility program and it doesn't recognize the printer, even though when I was on HP.com and checked to see if I had updated drivers, it showed my printer. Any help would be appreciated.