I print a lot, different printers but I do a lot of large format printing and other things. So I have two ideas that may help. First, Reseting a printer is a pain! If you had to go through and uninstall and reinstall then I would bet there is a setting somewhere in the print dialog box that is not set. If the photo is 6X4 as the screen shows, and the printer is capable of printing a 6X4 borderless which the specifications for your printer say it is... Then there is a box in the print dialog box causing it. Second, I am assuming you've already ruled out my first suggestion, so I wonder is a borderless 6X4 possible from say photoshop? If you have a 6X4 canvas are you able to print it borderless? That will help us narrow down the issue.
... View more