I'm having a very annoying problem about this HP USB Printer (HP Laserjet 4250 / HP Laserjet P2015).
I could not install it because of "USB not recognize" problem when I connect it to any USB ports. The PC is Dell Optiplex and I believe it has USB2.0 ports. I've tried every suggestions from different forums, but no luck at all. It's working on my IBM pentium3 laptop and to some older pentium 4 machines. I connect an Epson printer, also via USB, and it has no problem.
I disconnect the computer from the AC outlet for 1 whole night, I changed the USB cable, I directly connect the PC and printer to the AC wall, I turned on any related settings on the motherboard settings, I sent the printer to the repair shop and they found no problem. I'm thinking that USB2.0 to USB2.0 connection is not good???
Can you suggest a fix coz this gives me headaches? Thank you for any info that you can give.