Hi, hope someone can help. I have an HP Photosmart C4580 with the correct ink cartridges installed. Was working fine until today when I got an error message about incompatible ink cartridges. I followed online tips, ending up with trying to reset the printer. It is now frozen with a blue screen and colours scrolling across the bottom on the small control pad. I have tried unplugging but it remains stuck when I plug back in. It is an old printer but was working fine yesterday. Any help would be much appreciated!
Thanks for your reply. I am working on a MacBook version 10.7.5. I have tried a hard reset using a USB and have downloaded available drivers. The fixed blue screen has gone but I am still getting a 'incompatible print cartridge' message, even though they are new HP cartridges. The printer was working fine with these cartridges two days ago. Any other suggestions gratefully received.